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kivy syntax error conditions inside widgetadd

pyou are correct you cannot have conditionals inside a functions arguments move your codeifelifcode conditional outside just after the codeobject whatcode line calculate the value of codeposhintcode then call codeselfaddwidgetlabelargscodep

finding minimum of interpolated function

pfrom the help of a hrefhttpdocsscipyorgdocscipy0161referencegeneratedscipyinterpolateinterp2dcallhtmlscipyinterpolateinterp2dcall29 relnofollowcodescipyinterpolateinterp2dcodeap precode callself x y dx0 dy0 assumesortedfalse interpolate the function parameters x 1d array xcoordinates of the mesh on which to interpolate y 1d array ycoordinates of the mesh on which to interpolate codepre pfrom the help of a hrefhttpdocsscipyorgdocscipy0161referencegeneratedscipyoptimizeminimizehtml relnofollowcodescipyoptimizeminimizecodeap precodeminimizefun x0 args methodnone jacnone hessnone hesspnone boundsnone constraints tolnone callbacknone optionsnone minimization of scalar function of one or more variables parameters fun callable objective function x0 ndarray initial guess codepre pso it seems that codeinterp2dcode constructs a function with 2 separate input parameters but codeminimizecode tries to stuff in both variables as two components of the same input codendarraycode you can use a codelambdacode to mediate between the two syntaxesp precodef timefunction return minimizelambda v fv0v1 nparray10 04 code></pre> <p>on a side note, i've found <code>interp2d</code> to <a href="http://stackoverflow.com/a/34656728/5067311">give weird results</a> sometimes. you might want to consider using <a href="http://docs.scipy.org/doc/scipy-0.16.1/reference/generated/scipy.interpolate.griddata.html" rel="nofollow"><code>scipy.interpolate.griddata</code></a>, which doesn't construct an interpolating function for you, but rather computes substituted values for given input points (but you can access the interpolating functions themselves, such as <a href="http://docs.scipy.org/doc/scipy-0.16.1/reference/generated/scipy.interpolate.linearndinterpolator.html#scipy.interpolate.linearndinterpolator" rel="nofollow"><code>linearndinterpolator</code></a>). while i'd expect <code>griddata</code> to do a better job at interpolating, it would possibly (probably) be slower than substituting into a single interpolating function constructed with <code>interp2d</code> (but i'd check regardless).</p>

running methods on different cores on python

pin general running different threads is the best portable way to run on multiple cores of course in python the global interpreter lock makes this a moot point only one thread will make progress at a timep

django grouping and ordering across foreign keys with conditions

pagf has already showed you how to group by songartist what i would do to get the actual song object is store it in memcached or if the method you are calling is rather simplistic make it a static method or a class method you might could also initialize a song object with the data from the query and not actually save it to get access to this method might help to know the details of the methods you want to call from the song objectp

python recipie book writing and reading to files

puse thisp precodetextfile openrname w for item in ing textfilewritelinesstritem codepre

calculate bleu score in python

pthe bleu score consists of two parts modified precision and brevity penalty details can be seen in the a hrefhttpwwwaclweborganthologyp021040pdf relnofollowpapera you can use the a hrefhttpwwwnltkorgmodulesnltkalignbleuscorehtml relnofollowcodenltkalignbleuscorecodea module inside the nltk one code example can be seen as belowp precodeimport nltk hypothesis it is a cat at room reference it is a cat inside the room there may be several references bleuscore nltktranslatebleuscoresentencebleureference hypothesis print bleuscore codepre pnote that the default bleu score uses n4 which includes unigrams to 4 grams if your sentence is smaller than 4 you need to reset the n value otherwise codezerodivisionerror fraction0 0code error will be returned so you should reset the weight like thisp precodeimport nltk hypothesis open the file reference open file the maximum is bigram so assign the weight into 2 half bleuscore nltktranslatebleuscoresentencebleureference hypothesis weights 05 05 print bleuscore codepre

how to add model in django

pread django documentation a hrefhttpsdocsdjangoprojectcomen14 relnofollowhttpsdocsdjangoprojectcomen14ap pand do the tutorial a hrefhttpsdocsdjangoprojectcomen14intro relnofollowhttpsdocsdjangoprojectcomen14introap pthis will help you to get in touch with djangop

how to remove a pandas dataframe from another dataframe

pa set logic approach turn the rows of codedf1code and codedf2code into sets then use codesetcode subtraction to define new codedataframecodep precodeidx1 setdf1setindexa bindex idx2 setdf2setindexa bindex pddataframelistidx1 idx2 columnsdf1columns a b 0 3 4 codepre

django admin view limiting the selection of items from foreign key according to user

pto read only branch of hod in mclassadmin first make a relation between hod and branch for this make changes in modelpy asp precodefrom djangocontribauthmodels import user codepre padd hod field as p precode hod modelsforeignkeyuser codepre pto store hod and branch relationp pnow modelpy willbep precodeclass mbranchmodelsmodel hod modelsforeignkeyuser branchid modelscharfieldmaxlength20 branchname modelscharfieldmaxlength50 def strself return selfbranchname class macademicyearmodelsmodel academicyear modelscharfieldmaxlength20 def strself return selfacademicyear class mclassmodelsmodel branchid modelsforeignkeymbranch academicyear modelsforeignkeymacademicyear classid modelscharfieldmaxlength20 classname modelscharfieldmaxlength20 def strself return selfclassname codepre pthen in adminpy override getqueryset and formfieldforforeignkeyp precodeclass mclassadminadminmodeladmin def getquerysetself request printquery set qs supermclassadmin selfgetquerysetrequest if requestuserissuperuser return qs user userobjectsgetusernamerequestuserusername branch mbranchobjectsgethod user printbranchididbranch return qsfilterbranchididbranch def formfieldforforeignkeyself dbfield request kwargs printi am in func if dbfieldname branchid printdbfieldnamedb_field.name) user = user.objects.get(username=request.user.username) if not user.is_superuser: print('user=',user) branch = m_branch.objects.get(hod = user) print('branch = ',branch) '''if user=='e0711001': kwargs["queryset"] = m_branch.objects.filter(branch_id='b101') #elif user=='e0711002': else: kwargs["queryset"] = m_branch.objects.filter(branch_id='b102')''' #kwargs["queryset"] = m_branch.objects.filter(branch_id=user.branch.id) kwargs["queryset"] = m_branch.objects.filter(branch_name=branch) return super(m_classadmin, self).formfield_for_foreignkey(db_field, request, **kwargs) fields = ['branch_id','academic_year','class_name'] list_filter = ['academic_year','class_name'] search_fields = ['branch_id','academic_year','class_name'] list_display = ('class_name','branch_id','academic_year') admin.site.register(m_class,m_classadmin) </code></pre>

python xlrd test if string is in row

pdoh i neededp precodeif flag in srowvaluesr codepre phope this helps someone elsep

loglog plot point not showing

pif you have some data with either x0 or y0 you wont be able to print those points on a loglogplot as a hrefhttpsenwikipediaorgwikilogarithm relnofollowlog0 is undefineda however usingp precodeaxsetyscalesymlog axsetxscalesymlog codepre pwill allow you to see points a x0 or y0 theres a good explanation of the abilities of codesymlogcode a hrefhttpstackoverflowcomquestions3305865whatisthedifferencebetweenlogandsymloghereap

facebook api registerusers error 100 invalid email hash

pis the hash being stored as the right typep palso it may be good to store the hash as a separate variable in case theres some strange race condition popping upp

true false boolean in python

pcodeelifcode in python is equivilent to codeelse ifcode if one of the codeelifcode blocks execute none of the others can and will jump to the bottom of the codeifcodep pafter codenext taunt bear and not bearmovedcode is executed and evaluates to true and the block executes control of the program continues back at the front of the loop and will ask for input againp

finding the indices which has generate 5 larges sums

precodelargest aindex bindex 0 3 for i n1 in enumeratea for j n2 in enumerateb if n1 n2 gt largest largest n1 n2 aindex i bindex j codepre

use type information to cast values stored as strings

pyou might want to look at the xlrd module if you can load your data into excel and it knows what type is associated with each column xlrd will give you the type when you read the excel file of course if the data is given to you as a csv then someone would have to go into the excel file and change the column types by handp pnot sure this gets you all the way to where you want to go but it might helpp

using python how do i get a binary serialization of my google protobuf message

pyou can use pythons strings for getting proto buffers serialized data doesnt matter how they ware crated in python java c or any other languagep pthese is line from pythons version of proto buffers tutorial codeaddressbookparsefromstringfreadcodep

iterating over a file omitting lines based on condition efficiently

pif the file is small you may read it whole with codereadlinescode at once possibly reducing io traffic and iterate the sequence of lines if the sample rate is small enough you may consider sampling from geometric distribution which may be more efficientp pi do not know cython but i would consider alsop ul lisimplifying codetakesamplecode by removal of unnecessary variables and returning boolean result of the test instead of integerli lichange signature of codetakesamplecode to codetakesampleintcode to avoid inttofloat conversion every testli ul peditp paccording to comment of hpaulj it may be better if you use codereadsplitncode instead of codereadlinescode suggested by mep

using float values in imagedraw

pif you want subpixel positioning one possibleifinefficient solution would be to scale everything up by a factor of say 10 rounding originalfloatingpointcoordinates 10 to integers then resize the whole image back down at the end doesnt help with angles i supposep

edges with direction in pyqtgraph graphitem

pfor direction you might add a codepgarrowitemcode at the end of each line although this could have poor performance for large networks and for self connections codeqtguiqgraphicsellipseitemcode combined with an arrow p

how to successfully verify that 2 names are identical

pyou can try for any existing fuzzy string matching algorithm in pythonp peg simstringp pa hrefhttpwwwchokkanorgsoftwaresimstring relnofollowhttpwwwchokkanorgsoftwaresimstringap phope it will helpp

id like someone to help me understand a few lines of code

psort words by lengthp precodew abcd za wyya dssffgdg print sortbylengthw codepre pa hrefhttpideonecomjrzatv relnofollowhttpideonecomjrzatvap

python search for an element inside a dictionary inside a list

pegp precodeset id 50 id 80 def findsetid return elem for elem in set if elemid id codepre pthis will return all items with the specified id if you only want the first one add 0 after checking if it exists egp precodedef findsetid elems elem for elem in set if elemid id return elems0 if elems else none codepre

subprocess with variables command from different class

pmanage to get this corrected heres the correct way of doing this for future viewers a hrefhttppastebincomum0z8q2v relnofollowhttppastebincomum0z8q2vap

how can i check if a frame exists and if so destroy it

pmframe is only defined within the function it gets destroyed automatically after every pass of the function to verify this you could add global mframe to make it a global variable that lives until the next call of the functionp pthere are better solutions like storing the variable in a class as suggested in the other answerp pwhat about updating the label context also you might try to use only a single multiline labelp

parse all whitespace and grammar

pinstead of splitting you can use strongrefindallstrong for thisp precodeimport re string hello world l refindallrw string printl hello world codepre

i cant take the character in the url of django url

pyoure passing in a regex so you need to escape the special characters ie p pbut if youre trying to pass in querystring parameters youll want to handle that differently a hrefhttpstackoverflowcoma3711911httpstackoverflowcoma3711911ap

which python ide can run my script linebyline

pthe pythonwin ide has a builtin debugger at lets you step through your code inspect variables etcp pa hrefhttpstarshippythonnetcrewmhammondwin32downloadshtml relnofollowhttpstarshippythonnetcrewmhammondwin32downloadshtmlap pa hrefhttpsourceforgenetprojectspywin32 relnofollowhttpsourceforgenetprojectspywin32ap pthe package also includes a bunch of other utility classes and modules that are very useful when writing python code for windows interfacing with com etc p pits also discussed in the oreilly book a hrefhttporeillycomcatalog9781565926219 relnofollowpython programming on win32a by mark hammond p

flask wtforms datepicker widget to display a date

phave you declared the flaskbootstrap basehtml reference file at the top of your pagep precode extends bootstrapbasehtml as wtf codepre pyou can then initiate your form in your page by simply adding in the followingp precode wtfquickformform codepre

how can i break a for loop in jinja2

pbut if you for some reason need a loop you can check the loop index inside forloop block using loopfirstp precode for dict in listofdict for key value in dictitems if loopfirst ltthgt key ltthgt endfor endfor codepre

python unbound method receive must be called with messagenet instance as first argument got messageglobal instance instead

pyoure getting it because youre passing a codemessageglobalcode instance to a method on codemessagenetcode either pass a codemessagenetcode instance instead or turn the method into a normal functionp

is it possible to access global functions from other module

pif i understand you correctly you want to call the openurl method which is a part of git module from the panagorabuildcommand class then you have top precodefrom git import openurl codepre pthen in your panagorabuildcommand class you can simply callp precodeopenurlltltvalue for url parametergtgt codepre

wxpython seems dead when doing with nonstopping events

pthe problem is that youre running a long task and its blocking the guis main event loop so its basically frozen you need to put the crawler into a separate thread and use wxpythons threadsafe methods to update the gui see the a hrefhttpwikiwxpythonorglongrunningtasks relnofollowwikia or this a hrefhttpwwwblogpythonlibraryorg20100522wxpythonandthreads relnofollowtutorialap

python program expecting a return

pcodeinitcode as constructor cant return value p hr pevery codewidgetcode needs a parent so codeqtablewidgetcode needs toop precode table qtablewidgetparent codepre pbecause you send codemainwindowcode to your class as parent so now codemainwindowcode is codetablecode parent and codemainwindowcode can show codetablecode in its areap hr pcodetablecode is not main window so it cant set codewindowtitlecode you have to do it in codemainwindowcode or use codeparentcode in codetablewidgetcode p pthe same with coderesizecode to resize window you have to use it in codemainwindowcode or use codeparentcode in codetablewidgetcode p pcodeshowcode is use to show main window p hr pyou could define your class using codeqtablewidgetcode p precode class tablewidgetqtablewidget codepre pand then you can use codeselfcode instead of codetablecode p hr pstrongeditstrong full codep precodefrom pyqt4qtcore import from pyqt4qtgui import import sys class mymainwindowqmainwindow def initself parentnone supermymainwindow selfinitparent selftablewidget tablewidgetself selfsetcentralwidgetselftablewidget self.setwindowtitle("test_table") #self.resize(400, 250) self.show() class tablewidget(qtablewidget): def __init__(self, parent): super(tablewidget, self).__init__(parent) # change main window parent.setwindowtitle("test_table") parent.resize(400, 250) # initiate table self.setrowcount(4) self.setcolumncount(2) # set data self.setitem(0,0, qtablewidgetitem("item (1,1)")) self.setitem(0,1, qtablewidgetitem("item (1,2)")) self.setitem(1,0, qtablewidgetitem("item (2,1)")) self.setitem(1,1, qtablewidgetitem("item (2,2)")) self.setitem(2,0, qtablewidgetitem("item (3,1)")) self.setitem(2,1, qtablewidgetitem("item (3,2)")) self.setitem(3,0, qtablewidgetitem("item (4,1)")) self.setitem(3,1, qtablewidgetitem("item (4,2)")) self.setitem(3,0, qtablewidgetitem("item (4,1)")) self.setitem(3,1, qtablewidgetitem("item (4,2)")) def main(): app = qapplication(sys.argv) win = mymainwindow() # probably it has to be assigned to variable #win.show() # use if you don't have `self.show()` in class sys.exit(app.exec_()) if __name__ == '__main__': main() </code></pre>

running several python scripts with from one function

phave you tried writing an additional script that imports whats needed from these separate programs and runs them in the manner that you designatep

oserror dlopenlibsystemdylib 6 image not found

preinstalling python solved the issue for me using brew you can just codebrew install pythoncode again if it says that you need permission to write to codeusrlocalcode try to change permissions by codesudo chown r whoamiadmin usrlocalcode and then install pythonp

writing without closing in python

ptry a hrefhttpeffbotorgzonepythonwithstatementhtm relnofollowthe with statementa a little comlicated to understand but should do exactly thisp

openingattempting to read a file

precodearray with openpathtofile r as fp for line in fpreadlines arrayappendline codepre

how can i loop this code

pif you want the program to keep running until the user enters a particular number say kp precodeuserinput intrawinputenter an integer while true ifuserinput k break printfactorsuserinput userinput intrawinputenter an integer codepre

extract h1 text from div class with scrapy or selenium

ptry the following to extract the intended textp precodesxpathdivclassexampleh1textextract codepre

django modpython apache and wacky sessions

pi highly recommend you dont set maxrequestsperchild to 1 as that would cause so much overhead as each process gets killed off and respawns with every requestp pare you using apaches preform mpm or worker mpm p ptake a look at a hrefhttpdocsdjangoprojectcomendevhowtodeploymentmodpythonfromolddocs relnofollowhttpdocsdjangoprojectcomendevhowtodeploymentmodpythonfromolddocsa that may give you some helpp

how do i fetch youtube title and description from given url using python code

pboth answers no longer work the first because the v2 api is no longer available the other one because the url resource is no longer availablep pthis is a v3 code that is workingp precodefrom apiclientdiscovery import build developerkey your api key goes here youtube buildyoutube v3 developerkeydeveloperkey ids 5rc0qplgciulgbuxtfjfr0 results youtubevideoslistidids partsnippetexecute for result in resultsgetitems print resultid print resultsnippetdescription print resultsnippettitle codepre

cannot get marionette example code to run on python selenium

pcurrent version of firefox doesnt work with codeselenium webdrivercode why you are not trying to install earlier version of firefox p pfirefox 470 works fine for me you can download it from a hrefhttpsftpmozillaorgpubfirefoxreleases470 relnofollowfirefox ftpap pyou can try any other older version of firefox from a hrefhttpsftpmozillaorgpubfirefoxreleases relnofollowhereap pstrongnotestrong dont forget to turn off firefox auto updatep

pickle load importerror no module named doc2vecext

pwhen saving and loading binary data like a pickle you need to use binary mode not text modep precodemodelsaveopenmodelfile wb b for binary codepre

how to prevent table regeneration in ply

papparently there are arguments for this in plyyaccp precodedef yaccmethodlalr debugyaccdebug modulenone tabmoduletabmodule startnone checkrecursion1 optimize0 writetables1 debugfiledebugfileoutputdir debuglognone errorlog none picklefilenone codepre pso you just pass a different errorlog and debuglog with a debug etc methods that do not print to stdoutstderr and you specify a fixed outputdir and thats all you need to dop pupdate i just checked and this is the correct settingp precodeyaccyacc debugfalse do not create parserout outputdirrctempaaa instruct to place parsetab here codepre pactually you need to use an outputdir that already contains parsetabpy this will eliminate not just the message but your program will not write out parsetabpy it will just use itp

conditional statements with python lists

pif i were you i wouldnt use nested lists instead use a dictionaryp pwhat you can do with a dictionary is map keys the strings you want one row each for to values in this case however many times that string occurs or the number of columns in that row of the tablep pso you could do something a bit like thisp precode def additemitem dict if item in dict dictitem 1 else dictitem 1 codepre pyou can reference individual strings or rows in the table by using codedictstringcode and see how many columns that row has p palso using a dictionary is far more concise memory efficient and fast than using nested listsp pif you really have to do this with nested lists let me know and ill try and help with thatp

python sort on multiple attributes

pill take a slightly different approach to your questionp pare you open to using an inmemory db like sqllite if so this kind of sorting becomes trivial with a sql like command where you would do codeorder by firstpass desc cat asccode etc sqllite is fast most implementation in c language and more graceful in handling such operations especially if the data is large p

creating wiki links reading form xml in python

pintead of parsing xml by hand use a library like a hrefhttplxmlde relnofollowcodelxmlcodeap precodegtgtgt s ltreturnlinkgt httpwikibuildcomcabuildscit httpwikibuildcomcabuilds12archive ltreturnlinkgt gtgtgt from lxml import etree gtgtgt xmltree etreefromstrings gtgtgt links xmltreetextsplit gtgtgt for i in links print iiirfind1 httpwikibuildcomcabuildscitcit httpwikibuildcomcabuilds12archive12archive codepre pim not sure what you mean by wikilinks but the above should give you an idea on how to parse the stringp

str object is not callable in caesar encryptor

pi guess the author of the slide didnt actually emtestem the codep pthe code you produced is trying to use codemapcode to call codescode as a functionp precodemapss3 s3 this must be a callable object like a function codepre pif you wanted to create a dictionary mapping ascii letters to a letter 3 spots along in the alphabet use the a hrefhttpsdocspythonorg3libraryfunctionshtmlzip relnofollowcodezipcode functiona insteadp precoded dictzips s3 s3 codepre pcodezipcode then pairs up each element in codescode with each element in codes3 s3code and those codeletter letter 3code pairs are then passed to codedictcode to form keyvalue pairsp precodegtgtgt s abcdefghijklmnopqrstuvwxyz gtgtgt dictzips s3 s3 a d i l l o x a n q d g s v b e v y c f k n, 'w': 'z', 'r': 'u', 'o': 'r', 't': 'w', 'p': 's', 'f': 'i', 'j': 'm', 'm': 'p', 'e': 'h', 'q': 't', 'h': 'k', 'g': 'j', 'z': 'c', 'u': 'x', 'y': 'b'} </code></pre> <p>next, your last line will completely <em>fail</em> to do any encryption, because your map only handles <strong>uppercase letters</strong>, but you <strong>lowercased</strong> your input. either produce a lowercase map, or lowercase your input.</p> <p>lowercasing the map could look like this:</p> <pre><code>def encrypt_caesar(plaintext): s = "abcdefghijklmnopqrstuvwxyz" d = dict(zip(s, s[3:] + s[:3])) return ''.join(map(lambda l: d.get(l, l), plaintext.lower())) </code></pre> <p>or you could just use the <a href="https://docs.python.org/3/library/string.html#string.ascii_lowercase" rel="nofollow"><code>string.ascii_lowercase</code> constant</a>:</p> <pre><code>from string import ascii_lowercase def encrypt_caesar(plaintext): d = dict(zip(ascii_lowercase, ascii_lowercase[3:] + ascii_lowercase[:3])) return ''.join(map(lambda l: d.get(l,l), plaintext.lower())) </code></pre> <p>using this method is <em>rather slow</em>, however. for blazingly-fast 'encryption', use the <a href="https://docs.python.org/3/library/stdtypes.html#str.translate" rel="nofollow"><code>str.translate()</code> method</a>; the input map for that is best produced with <a href="https://docs.python.org/3/library/stdtypes.html#str.maketrans" rel="nofollow"><code>str.maketrans</code></a>:</p> <pre><code>from string import ascii_lowercase as alc def encrypt_caesar(plaintext, shift=3): map = str.maketrans(alc, alc[shift:] + alc[:shift]) return plaintext.lower().translate(map) </code></pre> <p>i added a <code>shift</code> parameter to define how much of an alphabet shift should be applied.</p> <p>i'll leave handling both lowercase and uppercase letters as an exercise to the reader!</p>

verify returned list with a list in python

pyour codegetcolorcatcode function must return a strongstringstrongbr but it returns a strongliststrong thats why you are not getting correct outputp precodeeg l1abcd l2abcd b in l1 false b in l1 true b in l2 true c in l2 false cd in l2 true codepre

does a wysiwyg editor for report labs rml exist

pto the best of my knowledge none exists probably because those of us using reportlab choose it because we chose python first and then went looking for a tool to generate pdf reports from within pythonp pwhat would be the purpose of a wysiwyg rml editor in general i think most of us generate rml or use platypus in code based on the results of processing some kind of data in python so most of the interesting stuff has to be done in code anywayp

calculating values in list in python

pyou are trying to subscript the float instead of codevalue somenumbercode you have code15845714285714287code which is not a dictionaryp pyou can modify the code to execute codetrycode when calling codeitemvaluecode this way when code1584code comes up instead of a dictionary the code will execute the codeexceptcode partp

inspecting and livemodifying a call argument from a decorator

pthe module codeinspectcode contains all you need to meet your requirementsp ul licodegetargspeccode gives you the exact definition to know the parameters and their orderli licodegetcallargscode processes the actual parameters and gives their valuesli ul pcode could bep precode class addoneobject def initself paramname selfparamname paramname def callself func selfargspec inspectgetargspecfunc wrapsfunc def decoratedargs kwargs callargs inspectgetcallargsfunc args kwargs if callargshaskeyselfparamname callargsselfparamname 1 elif callargsselfargspeckeywordshaskeyselfparamname callargsselfargspeckeywordsselfparamname 1 newargs callargsi for i in selfargspecargs listcallargsselfargspecvarargs newkwargs callargsselfargspeckeywords return funcnewargs kwargs return decorated codepre pthat meansp ul liuse getcallargs to process default values and positional parameters given as keyed parametersli lisearch paramname in positional parameter if found increase corresponding valueli liif not found in positional parameters search it in keyword arguments if found increase corresponding valuesli ul pthen the list of positional arguments and the hash for keyword ones are built from the codegetcallargscode returned value to allow the possibilities of extra varargs or other keyword parametersp

with gurobi how can i constraint the domain of a variable in a set of value

pi dont know if it is directly possible this is not possible in standard ilp so maybe as an extension of gurobi but you can add some constraints to your program assuming the variable you want to constrained is strongystrong and the set of variable is strongdsubysub vsub1sub vsub2sub vsubdsubysubsubstrong you could add the following strongxsubisubstrong variables and constraintsp ul listrongy xsubisub for i in 1 dsubysubstrongli listrongsum xsubisub for i in 1 dsubysub 1strongli listrongxsubisub 0 or 1strongli ul

given a string call the method with the same name

puse a hrefhttpsdocspythonorg35libraryfunctionshtmlglobals relnofollowcodeglobalscodea which is a builtin function from documentation for a hrefhttpsdocspythonorg35libraryfunctionshtmlglobals relnofollowcodeglobalscodeap blockquote preturn a dictionary representing the current global symbol table this is always the dictionary of the current module inside a function or method this is the module where it is defined not the module from which it is calledp blockquote phowever if your methods are in some local scope you can a hrefhttpsdocspythonorg35libraryfunctionshtmllocals relnofollowcodelocalscodea instead of codeglobalscodep ptry this using codeglobalscodep precodedef method1arg printmethod1name called with arg def method2arg printmethod2name called with arg def method3arg printmethod3name called with arg methods method1 method2 method3 testdata testset1 testset2 testset3 for x in testdata for y in methods globalsyx codepre poutputp precodemethod1 called with testset1 method2 called with testset1 method3 called with testset1 method1 called with testset2 method2 called with testset2 method3 called with testset2 method1 called with testset3 method2 called with testset3 method3 called with testset3 codepre

cannot construct tkinterphotoimage from pil image

pthe a hrefhttpeffbotorgtkinterbookphotoimagehtm relnofollowcodephotoimagecodea class from codetkintercode takes a filename as an argument and as it cannot convert the codeimagecode into a string it complains instead use the codephotoimagecode class from the codepilimagetkcode module this works for mep precodefrom tkinter import from pil import imagetk image def imageresizeimagefile width 500 height 300 image imageopenimagefile im2 imageresizewidthheight imageantialias return im2 def showimage labeloriginalimage image imagetk root tk filename picturesspaceap923487321702jpg imageresize imageresizefilename imagetk imagetkphotoimageimageresize labeloriginalimage labelroot labeloriginalimagepack buttonopen buttonroot textopen image commandshowimage buttonopenpack rootmainloop codepre pnotice the change from codeimagetk photoimageimageresizecode to codeimagetk imagetkphotoimageimageresizecodep

opening csv with r and it is writing to the end of the file

preading from the file moves the file pointer since you have read in all the lines the file pointer is now pointing to the end of file so further writes are happening at the end of the file p pto write from the beginning of the file you need to reset the file pointer to the start of the file by doing before you start writing data backp precodeitemsdataseek00 codepre pyour modified code should look likep precodeitemsdata opentestcsv r mylist itemsdatareadstripsplitn for line in rangelenmylist mylistline tuplemylistlinesplit rewind file pointer to the start of the file itemsdataseek00 for i in rangelenmylist for a in range04 if a3 itemsdatawritemylistia n else itemsdatawritemylistia itemsdataclose codepre

rawinput stops gui from appearing

pthis is how tkinter is defined to work it is single threaded so while its waiting for user input its truly waiting codemainloopcode must be running so that the gui can respond to events including internal events such as requests to draw the window on the screenp pgenerally speaking you shouldnt be mixing a gui with reading input from stdin if youre creating a gui get the input from the user via an entry widget or get the user input before creating the gui p pa decent tutorial on popup dialogs can be found on the effbot site a hrefhttpeffbotorgtkinterbooktkinterdialogwindowshtm relnofollowhttpeffbotorgtkinterbooktkinterdialogwindowshtmap

how to authenticate android user post request with django rest api

pyou may want to use the django sessions middleware which will set a cookie with a django sessionid on the following requests the sessions middleware will set an attribute on your request object called user and you can then test if user is authenticated by requestuserisauthenticated or loginrequired decorator also you can set the session timeout to whatever you like in the settingsp pthis middleware is enabled in default django settingsp

how to get to secure webpage with using certain certificate selenium python

ptry to replicate the ok click functionality on selenium p precodefrom selenium import webdriver driver webdriverfirefox drivergeturl element driverfindelementbyxpathltxpath of the click button heregt elementclick codepre

execute a selenium test case from another python file

pyou can instantiate the seleniumexception class if you want to be able to call its methods directlyp precodeimport chromesettingstest print going to call mytest chromesettingstestseleniumexception mytestsetup codepre

is there any library to deserialize with python which is serialized with java

pif you are using java classes then i dont even know what it would mean to deserialize a java class in a python environment if you are only using simple primitives ints floats strings then it probably wouldnt be too hard to build a python library that could deserialize the java formatp pbut as others have said there are better crossplatform solutionsp

redirect stdout to a file only for a specific thread

pi am not familiar with python but i guess you would have a logging framework in python to redirect log messages to different appenders stdout files etc your new thread could use a different appender a file may be and other threads might log to a stdout appenderp pstdout stream is common for a process it is not per threadp

googe drive api no support for map export python

pyou can use codedriveaboutgetcode to determine the export formats available for each google mime typep precodeget httpswwwgoogleapiscomdrivev3aboutfieldsexportformatsampkeyyourapikey exportformats applicationvndgoogleappsform applicationzip applicationvndgoogleappsdocument applicationrtf applicationvndoasisopendocumenttext texthtml applicationpdf applicationzip applicationvndopenxmlformatsofficedocumentwordprocessingmldocument textplain applicationvndgoogleappsdrawing imagesvgxml imagepng applicationpdf imagejpeg applicationvndgoogleappsspreadsheet textcsv applicationxvndoasisopendocumentspreadsheet applicationzip applicationpdf applicationvndopenxmlformatsofficedocumentspreadsheetmlsheet applicationvndgoogleappsscript applicationvndgoogleappsscriptjson applicationvndgoogleappspresentation applicationvndopenxmlformatsofficedocumentpresentationmlpresentation applicationpdf textplain codepre pas you can see there are currently no export formats defined for codeapplicationvndgoogleappsmapcode given that google my maps does support exporting to kmzkml i think ideally the google drive api would as well you can file a feature request on the a hrefhttpscodegooglecomagooglecompappsapiissuesissuesentrytemplatefeature20requestamplabelstypeenhancementapidrive relnofollowissue trackera.</p>

how to list objects with relationship manytomany on django example users and follows

pim not sure of my answer but nobody answered so heres my tryp pcodefollowingcode is a queyryset which becomes a list of codeuserprofilecode but you filter on codeuserincode which is a list of codeusercode can you try making codefollowscode a manytomanyfield to codeusercode instead and tell us the results even if you still have the same problem the filter will make more sensep

how do i add the music to my game at the right time

pjust remove this partp precodewhile not done for event in pygameeventget if eventtype pygamequit done true elif eventtype pygameconstantsuserevent pygamemixermusicloadcod4mp3 pygamemixermusicplay clocktick20 codepre pfrom the codeiniciarcode function p pwhats the point of this loop anyway other than causing the behaviour you dont wantp

resend account activation email with django redux

pyou can put a new boolean field to your user model lets call it mailsent and after sending the registration email you can set it to true then put a middleware and check the incoming users email if user is not verified but mailsent is true redirect the user to a url and let himher to resend the activation email p

how can i parse json in google app engine

plook at the python section of a hrefhttpjsonorg relnofollowjsonorga the standard library support for json started at python 26 which i believe is newer than what the app engine provides maybe one of the other options listedp

how to call a different render after a form submission

pin your codemaincode method unless values is global it wont be defined for codeif not valuescodep pas to your question add another coderendertemplatecode call just after the conditional for if the form was submittedp precodeif requestmethodpost url requestformurl maxdepth requestformdepth numberofrelated requestformnumberofrelated values crawlingurlmaxdepthnumberofrelated return rendertemplateindexhtmlvarvalues 1 return rendertemplateindexhtmlvarvalues 2 codepre pif the form is submitted the conditional will be true and the template will be rendered at comment code1code if the user is navigating to the page normally the conditional will be false and the line with comment code2code will be calledp

python negative exponent vs division

pif you are considering time it seems to be python version dependent at leastp pstrongpython 27strongp precodeimport timeit gtgtgt timeittimeit201 0017730650260812 gtgtgt timeittimeit120 007249812618659046 codepre pstrongpython 34strongp precodeimport timeit gtgtgt timeittimeit201 003804316809533148 gtgtgt timeittimeit120 001787598969687565 codepre

python overlapping timer with udp listener

pi think i have what is a working solution it punts on the looping complexity a bit but i believe it is a clean maintainable readable solutionp pive created three specific py scripts one opens a socket to send the wakeup packet second opens a socket to send the alive packet and a third that opens up a socket to listenrespond to device search requestsp pthese are then imported into a calling script with a timerbased interruptp pheres how it looksp precodeimport udpwakeup import udplisten import udpalive import shutil import string from threading import timer import thread time sys from datetime import datetime as dt dummy flag to ensure constant looping restart 1 def timeout threadinterruptmain call and execute the wakeup packet broadcast udpwakeupmain initiate timer for 1800 seconds or 30 minutes while restart 1 try call and execute the listener routine timer1800 timeoutstart udplistenmain except on timer expire break from listener call alivebroadcast reset timer and restart listener udpalivemain codepre

adding zero in front of a character in python

pwell am not a python programmer but if one has to use strongcoderegexcodestrong to solve it then following one will find the desired number which is single digit before decimalp pstrongregexstrong codebddbcodep pstrongexplanationstrong p ul lipcodebcode at start and end maintains the word boundarypli lipcodeddcode matches the single digit with decimal part but strongcapturesstrong only single digitpli ul pstrongreplacement to dostrong replace with code01code where code1code is captured single digitp pkbdstronga hrefhttpsregex101comrqt5nx42 relnofollowregex101 demoastrongkbdp pstrongnotestrong am not a python programmer if anyone wishes to add demo of python program to this answer go aheadp

how to replace last in string use re in python

pyou could try the below regex which uses positive lookaheadp precodegtgtgt s eric44521vc60green gtgtgt m resubrr1 s gtgtgt m eric44521 codepre

replace a character by another in a file

precodeimport fileinput for line in fileinputinputabc inplacetrue line linereplacet ed print line codepre pthis doesnt replace character by character instead it scans through each line replacing required character and writes the modified linep pfor example file abc containsp precodei want to replace character codepre pafter executing output would bep precodei waned edo replace characeder codepre pwill it help you hope sop

one test case fails due to runtime error

pcodepowx ycode is always slower than codexycode and also codepowcode method cannot be used for long integersp ptry codexycode it would be bit fasterp

determining file changes in python

pon linux a convenient interface for file modification monitoring is a hrefhttppeoplegnomeorgveillardgamin relnofollowgamin the file alteration monitora python bindings are provided and they are really easy to use though they could be documented better especially the magic numbers returnedp

how can i create the json object on python

pyou are defining codecoordinatescode to be a string of the specified format there is no way codejsoncode can encode that as a list you are saying one thing when you want anotherp psimilarly if you dont want the toplevel dictionary to be the only element in a list dont define it to be an element in a listp precodedata id id iscity false name name county county cluster i cluster2 i available true isdeleted false coordinates lat lng codepre pi dont know how you defined codecentercode or how you expected it to have the value codenamecode and the value codecountycode at basically the same time i have declared two new variables to hold these values you will need to adapt your code to take care of this detail i also fixed the typo in available where apparently you expected python to somehow take care of thisp

python calculate time attendance to file csv

pid suggest you use pandas to import the data from the filep precodeimport pandas as pd pdreadcsvfilepath sep codepre pshould do the trick assuming filepath leads to your csv id then suggest that you use the datetime functions to convert your strings to dates you can calculate with i think you could also use numpys datetime64 types im just not used to themp precodeimport datetime as dt day dtdatetimestrptime23022015 dmy in dtdatetimecombineday dtdatetimestrptime0827 hmtime codepre pshould do the trick it is necessary that your codeincode is also a codedatetimecode object not only a time object otherwise you cannot substract them which would be the necessary next step to calculate the worktimep pis think this should be a bit to get you started youll find the pandas documentation a hrefhttppandaspydataorgpandasdocsstable relnofollowherea and the datetime documentation a hrefhttpsdocspythonorg2librarydatetimehtml relnofollowhereap pif you have further questions try to ask your question more specificp

numpy set array element to another array

pit would work ifp precodefinalarray npzeros3 dtypeobject finalarray0 a codepre pthen codefinalarraycode takes object points like a list p pbut i hesitate suggesting this because this feature is being abused or misused by beginnersp pa hrefhttpstackoverflowcoma37597524901925httpstackoverflowcoma37597524901925a my answer to another question about a deep copy of an array of arraysp pthe codeconcatenatecode answer is the only alternative that makes sense given the dimensions of your arraysp pa variation on the codeconcatenatecode isp precodefinalarray npzeros934adtype finalarray32 a etc codepre pin other words make codefinalarraycode big enough to receive the elements of the arrays and copy valuesp

get requestuser object

pyes but this is not very nice please see itp pa hrefhttpsdjangosnippetsorgsnippets2179 relnofollowhttpsdjangosnippetsorgsnippets2179ap pi dont know another wayp

replicating request to chef with python rsa

pyou may automate your interaction with chef using these toolsp ul lia hrefhttpwwwsearchsourceforgenetmechanize relnofollowmechanizeali lia hrefhttpsdocspythonorg2libraryurllib2html relnofollowurllib2ali lia hrefhttpdocspythonrequestsorgenlatest relnofollowrequestsali lia hrefhttpscrapyorg relnofollowscrapyali lia hrefhttpspypipythonorgpypiselenium relnofollowseleniumali ul pstrongemnoteemstrongp pas codejwwcode commented the op mentioned that he doesnt want to use selenium brhowever i wanted my answer to be complete it may be used by others including me besides the op i included selenium in the listp

python confusion with returning variables

pwhat youve returned should be assigned to some variable otherwise the return value gonna be lostp pim curious didnt you get codenameerror global name dingo is not definedcode with your sample codep precodein 38 def apples dingo 2 return dingo def bananasdingo printdingo def main dingoapples bananasdingo main 2 codepre

ssdeeps fuzzycompare always returns 0 loaded from ctypes python

pi compiled the included codesampleccode and it seemed to work so i tried something similar in python note that it uses a very large input buffer 0x50000 and only modifies 16 bytes yielding a close match of 99p precodeimport ctypes from random import randrange seed seed42 spamsumlength 64 fuzzymaxresult spamsumlength spamsumlength 2 20 size 0x50000 fuzzy ctypescdllfuzzydll fuzzyhashbuf fuzzyfuzzyhashbuf fuzzyhashbufrestype ctypescint fuzzyhashbufargtypes ctypesccharp buf ctypescuint32 buflen ctypesccharp result fuzzycompare fuzzyfuzzycompare fuzzycomparerestype ctypescint fuzzycompareargtypes ctypesccharp sig1 ctypesccharp sig2 out1 ctypescreatestringbufferx00 fuzzymaxresult out2 ctypescreatestringbufferx00 fuzzymaxresult in1 joinchrrandrange256 for x in xrangesize in2 joinc if i lt 0x100 or i gt 0x110 else x25 for i c in enumeratein1 print fuzzyhashbufin1 lenin1 out1 print fuzzyhashbufin2 lenin2 out2 print out1value print out2value print fuzzycompareout1 out2 codepre poutputp precode0 0 6144rr1yohh0xi3vfndcrxmg0bqmfkdla6spavujzaqho5hqxnhtqyr4zgytywlfjqyff5crxmg9ik4ouqqahuy8zgs7 6144lr1yohh0xi3vfndcrxmg0bqmfkdla6spavujzaqho5hqxnhtqyr4zgytywlfjkyff5crxmg9ik4ouqqahuy8zgs7 99 codepre

getting all objects in a class without using loops django 18

pyou could filter your object selection down to only the items you want in your view then only pass the selected items onto your templatep plets say i have a project named getbypk with an application named bypk here is the bypk models filep pgetbypkbypkmodelspyp precodefrom djangodb import models class navermodelsmodel valuetoreference modelscharfieldmaxlength10primarykeytrue anotherfield modelstextfieldmaxlength500 codepre pthen in your view you could select a subset getbypkbypkviewspyp precodefrom bypkmodels import naver whatever view you want onlythese a b c filteredobjects naverobjectsfiltervaluetoreferenceinonlythesevalues pass filteredobjects to template codepre phere is a link about querying models a hrefhttpsdocsdjangoprojectcomen18topicsdbqueries relnofollowhttpsdocsdjangoprojectcomen18topicsdbqueriesap

public python program as one file with all modules included

pyou can specify a coderequirementstxtcode file which lists the dependencies used by your program python pip can read this file to bundle and package your application see the docs here a hrefhttpspippypaioenstableuserguiderequirementsfiles relnofollowhttpspippypaioenstableuserguiderequirementsfilesap palso i believe that opencv requires some native extensions installed which are not packaged with python unfortunately youll need to install native extensions on each new machine you usep

python if conditional statement flow

plook at the a hrefhttpdocspythonorg2tutorialcontrolflowhtml relnofollowpython documentation on control flow toolsa you simply need to replace the second codeifcode by a codeelifcodep precodeoption floatinputselect option if option 1 printpopulation group 1 elif option 2 printpopulation group 2 else printinvalid selection printtesting codepre

python socket wait

pthat line codesockrecv1024code blocks until 1024 bytes have been received or the os detects a socket error you need some way to know the message size this is why http messages include the contentlengthp pyou can set a timeout with a hrefhttpdocspythonorg2librarysockethtmlsocketsocketsettimeout relnofollowsocketsettimeouta to abort reading entirely if the expected number of bytes doesnt arrive before a timeoutp pyou can also explore pythons nonblocking sockets using setblocking0p

events wxpython trigger wrong function

pwhen you are binding to onselect you have which has called the method and then bound to the result of onselect when you bind to a method or function you should not use so the bind is to the object itselfp

brews python 277 shows up as 275

pyou have to explicitly tell brew that you want to switch to the version of python you just installed to do that typep precodebrew switch python 277 codepre pin your command line this may not work if the version you installed is actually code2772code in that case just replace code277code with code2772code above and run it again once this is done youll have to reload your environment to pick up the changesp

matplotlib import error no module named path

pi doubt that most of you brought here by google have the problem i had but just in casep pi got the above importerror no module named path on fedora 17 because i was trying to make use of matplotlib by just setting syspath to point to where i had built the latest version 151 at the time dont do thatp ponce i ran python setuppy install as root to do a proper install and got rid of my syspath hack the error was fixed p

mysql interface error only occuring if ran in django

pi faced the same issue for me problem was p precodefrom djangodb import connections cursorconnectionsdefaultcursor codepre pwas outside in some other script file p pwhen i move this line inside the method where i was executing query it solved the issuep precodecursorconnectionsdefaultcursor codepre pthe learning for me was the connections are not maintained with my previous approachp

how to wrap elements in python3

plets start from where you gotp precodebody etfromstringxml codepre pnow we need locate the element codemeaningcode you can do it with xpath or codeelementfindcode or just use hard coded index in this case btw it is code1code not code2code im using codefindcode herep precodemeaning findmeaning codepre pnow we make a codelttextgtcodeand add it as a sibling of codeltmeaninggtcodep precodetext bodymakeelementtext meaningaddprevioustext codepre pin the end move codeltmeaninggtcode into codelttextgtcodep precodetextappendmeaning codepre pnote that the tailing text is also moved and codeappendcode will actually move the nodep

tkinter resize text to contents

pby reusing sc0tts answer and bryan oakleys answer here a hrefhttpstackoverflowcomquestions20565149getofnumberoflinesofatexttkinterwidgetget of number of lines of a text tkinter widgeta we can have this emreadytouseem code posted here for future reference that also works for strongproprtional fontsstrong p precodeimport tkinter as tk import tkfont class textetktext def initself eventnone xnone ynone sizenone txtnone args kwargs tktextinitself masterroot args kwargs selffont tkfontfontfamilyhelvetica neue lt com 55 romansize35 selfplacex10y10 selfinserttkinsert blah selfconfigfontselffont selfupdatesizeeventnone bindtags listselfbindtags bindtagsinsert2 custom selfbindtagstuplebindtags selfbindclasscustom ltkeygt selfupdatesize def updatesizeself event width0 lines0 for line in selfget10 end1csplitn widthmaxwidthselffontmeasureline lines 1 selfconfigheightlines selfplacewidthwidth10 root tktk rootgeometry500x500 texte rootmainloop codepre

multithreading in python 27

pyou dont want to call codeasyncresultgetcode until youve queued all of your jobs otherwise you will only allow one job to run at a timep ptry queueing all of your jobs first then processing each result after theyve all been queued something likep precoderesults for region directoryids in directdictiteritems for dir in directoryids result poolapplyasyncdescribewithdirectoryworkspaces region dir username resultsappendresult for result in results code content resultget if code 0 codepre pif you want to handle the results in an asynchronous callback you can supply a callback argument to poolapplyasync as documented a hrefhttpsdocspythonorg2librarymultiprocessinghtmlmultiprocessingpoolmultiprocessingpoolapplyasync relnofollowhereap precodefor region directoryids in directdictiteritems for dir in directoryids def donecallbackresult pass process result poolapplyasyncdescribewithdirectoryworkspaces region dir username donecallback codepre

python match whitespaces

pmaybe this code helps youp precodeimport re def correctstring return joinresplit string codepre

handling a timeout error in python sockets

phere is a solution i use in one of my projectp h3codenetworkutilstelnetcodeh3 precodeimport socket from timeit import defaulttimer as timer def telnethostname port23 timeout1 start timer connection socketsocket connectionsettimeouttimeout try connectionconnecthostname port end timer delta end start except sockettimeout socketgaierror as error loggerdebugtelnet error error delta none finally connectionclose return hostname delta codepre h3testsh3 precodedef testtelnetisnullwhenhostunreachableself hostname unreachable response networkutilstelnethostname selfassertdictequalresponse unreachable none def testtelnetgivetimewhenreachableself hostname 127001 response networkutilstelnethostname port22 selfassertgreaterresponsehostname 0 codepre

pyside qtextedit

pthe codetohtmlcode function emconvertsem the current text content to html there is no way to retrieve the original inputp pif you want to keep the original input just save it to a variablep

disable choice list in django admin only for editing

pthe answer of alasdair is better than this one because this one doesnt prevent a submission but i post it just in case someone wants the equivalent to readonly for codemodelchoicefieldcodep precodeselffieldscustomeridwidgetwidgetattrsdisabled disabled codepre pnotice that for a codechoicefieldcode is enought something like thisp precodeselffieldscitycodewidgetattrsdisabled true codepre

how to replace a text using the found expression with regex

pa python version this expects the file name as the argument when you call the scriptp precodeimport sys fname sysargv1 with openfnameru as fstream for numline in enumeratefstream assumes tab between the ticker symbol and the rest if not use instead of t vals linesplitt print 01formatnum1vals0 codepre

pythontwisted reactor starting too early

pthe api that youre looking for is a hrefhttptwistedmatrixcomdocumentscurrentapitwistedinternetinterfacesireactorcorehtmlcallwhenrunning relnofollowtwistedinternetreactorcallwhenrunningap phowever it wouldnt hurt to have less than 60 seconds of computation at startup either perhaps you should spread that out or delegate it to a thread if its relatively independentp

python regex on multiple src to destination

pas i understand your question there are two casesp pstrongfirststrong search and replace line by linep precodeplaceholders findandreplace for line in file for text in line if text target text placeholdersaddtextgetplaceholder if placeholderssize 0 for placeholder in placeholders replace new text at position placeholder placeholders codepre pstrongsecondstrong search all lines then replacep precodefindandreplace for line in file for text in line if text target text placeholdersaddtextgetplaceholder if placeholderssize 0 for placeholder in placeholders replace new text at position placeholder placeholders codepre pwhat is difference between codes abovep pyes just how many times you ask the question codeplaceholderscode list is empty or not the strongfirststrong case asks codefilenumberoflinecode times meanwhile the strongsecondstrong case ask only one time i think this should have a very small significant to speed of regexp pstrongnotestrong the code above is just simple demonstration of scenerio in your problem there is no guarantee that regex engine will work in this wayp pstrongbutstrongp pif you want the another way to optimize a speed of your program i suggestp ol lido parallel computingli liuse any regex engine which provide jit compilation in case that you have a complex regexli ol