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AhmedSSoliman

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CoNaLa-Large

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matplotlib diagrams with 2 y-axis

plt.show()

python pandas write to sql with nan values

df2 = df.astype(object).where(pd.notnull(df), None)

split string 'sad_pandas_and_happy_cats_for_people' based on string 'and', 'or' or 'for'

re.split('_(?:for|or|and)_', 'sad_pandas_and_happy_cats_for_people')

python remove anything that is not a letter or number

re.sub('[\\W_]+', '', s)

how to set different levels for different python log handlers

logging.basicConfig(level=logging.DEBUG)

how to configure logging in python

logger.setLevel(logging.DEBUG)

in django, how do i filter based on all entities in a many-to-many relation instead of any?

Task.objects.exclude(prerequisites__status__in=['A', 'P', 'F'])

list comprehension - converting strings in one list, to integers in another

[sum(map(int, s)) for s in example.split()]

how to match beginning of string or character in python

float(re.findall('(?:^|_)' + par + '(\\d+\\.\\d*)', dir)[0])

how do i write a float list of lists to file in python

file.write(str(m))

matplotlib scatter plot with different markers and colors

plt.scatter(np.random.randn(100), np.random.randn(100), facecolors='none')

disable abbreviation in argparse

parser = argparse.ArgumentParser(allow_abbrev=False)

find out the number of non-matched elements at the same index of list `a` and list `b`

sum(1 for i, j in zip(a, b) if i != j)

getting pandas dataframe from list of nested dictionaries

pd.concat([pd.DataFrame(l) for l in my_list], axis=1).T

decode json and iterate through items in django template

return render_to_response('foo.html', {'results': decoded_json['Result']})

function with arguments in two lists

[peaks([x, y]) for x, y in zip(xscat, yscat)]

flatten dataframe with multi-index columns

piv.unstack().reset_index().drop('level_0', axis=1)

sort dict by value python

sorted(data, key=data.get)

extracting words from a string, removing punctuation and returning a list with separated words in python

[w for w in re.split('\\W', 'Hello world, my name is...James!') if w]

how do i unit test a monkey patch in python

self.assertEqual(my_patch_method, patch_my_lib().target_method.__func__)

from a list of lists to a dictionary

{x[1]: x for x in lol}

set the current working directory to 'c:\\users\\uname\\desktop\\python'

os.chdir('c:\\Users\\uname\\desktop\\python')

remove all non-alphabet chars from string `s`

"""""".join([i for i in s if i.isalpha()])

python: how can i execute a jar file through a python script

subprocess.call(['java', '-jar', 'Blender.jar'])

python list comprehension for loops

[(x + y) for x, y in zip('ab', '12345')]

how to create a hyperlink with a label in tkinter?

root.mainloop()

how to delete an item in a list if it exists?

cleaned_list = [x for x in some_list if x is not thing]

how to hide firefox window (selenium webdriver)?

driver = webdriver.Firefox()

python/django: creating a simpler list from values_list()

Entry.objects.values_list('id', flat=True).order_by('id')

match contents of an element to 'example' in xpath (lxml)

tree.xpath(".//a[text()='Example']")[0].tag

django typeerror int() argument must be a string or a number, not 'querydict'

u = User(name=request.POST.get('user'))

search and split string 'aaa bbb ccc ddd eee fff' by delimiter '(ddd)'

re.split('(ddd)', 'aaa bbb ccc ddd eee fff', 1)

how to flush the input stream in python?

sys.stdout.flush()

replace all non-alphanumeric characters in a string

re.sub('[^0-9a-zA-Z]+', '*', 'h^&ell`.,|o w]{+orld')

how can i get my contour plot superimposed on a basemap

plt.show()

deleting rows in numpy array

x = numpy.delete(x, 0, axis=0)

reading formatted text using python

g.write('# comment\n')

python pandas identify duplicated rows with additional column

df.groupby(['PplNum', 'RoomNum']).cumcount() + 1

create a json response `response_data`

return HttpResponse(json.dumps(response_data), content_type='application/json')

python find list lengths in a sublist

[len(x) for x in a[0]]

ordering a list of dictionaries `mylist` by elements 'weight' and 'factor'

mylist.sort(key=lambda d: (d['weight'], d['factor']))

sort a list in python based on another sorted list

sorted(unsorted_list, key=lambda x: order.get(x, -1))

reading a text file and splitting it into single words in python

[word for line in f for word in line.split()]

how do i access a object's method when the method's name is in a variable?

getattr(test, method)()

how do i change the representation of a python function?

hehe()

how can i show figures separately in matplotlib?

plt.show()

how do get matplotlib pyplot to generate a chart for viewing / output to .png at a specific resolution?

plt.savefig('/tmp/test.png', bbox_inches='tight')

python, lxml and xpath - html table parsing

return [process_row(row) for row in table.xpath('./tr')]

fast way to put ones beetween ones in each row of a numpy 2d array

np.maximum.accumulate(Q[:, ::-1], axis=1)[:, ::-1]

parse a tuple from a string?

new_tuple = tuple('(1,2,3,4,5)'[1:-1].split(','))

how can i properly set the `env.hosts` in a function in my python fabric `fabfile.py`?

run('ls')

what is the simplest way to swap char in a string with python?

"""""".join([s[x:x + 2][::-1] for x in range(0, len(s), 2)])

iterate over a dictionary by comprehension and get a dictionary

dict((k, mimes[k]) for k in mimes if mimes[k] == 'image/tiff')

split a string into n equal parts?

parts = [your_string[i:i + n] for i in range(0, len(your_string), n)]

django models - how to filter number of foreignkey objects

[a for a in A.objects.all() if a.b_set.count() < 2]

case insensitive dictionary search with python

a_lower = {k.lower(): v for k, v in list(a.items())}

python - iterating over a subset of a list of tuples

[x for x in l if x[1] == 1]

how do i attach event bindings to items on a canvas using tkinter?

root.mainloop()

python: how to add three text files into one variable and then split it into a list

msglist = [hextotal[i:i + 4096] for i in range(0, len(hextotal), 4096)]

how do i make the width of the title box span the entire plot?

plt.show()

removing elements from an array that are in another array

A = [i for i in A if i not in B]

find object by its member inside a list in python

[x for x in myList if x.age == 30]

filter the objects in django model 'sample' between date range `2011-01-01` and `2011-01-31`

Sample.objects.filter(date__range=['2011-01-01', '2011-01-31'])

get a md5 hash from string `thecakeisalie`

k = hashlib.md5('thecakeisalie').hexdigest()

numpy - add row to array

array([[0, 1, 2], [0, 2, 0], [0, 1, 2], [1, 2, 0], [2, 1, 2]])

starting two methods at the same time in python

threading.Thread(target=play2).start()

django - regex for optional url parameters

return render_to_response('my_view.html', context)

converting byte string in unicode string

c.decode('unicode_escape')

convert date `my_date` to datetime

datetime.datetime.combine(my_date, datetime.time.min)

get all the second values from a list of lists `a`

[row[1] for row in A]

extract dictionary values by key 'feature3' from data frame `df`

feature3 = [d.get('Feature3') for d in df.dic]

append string 'str' at the beginning of each value in column 'col' of dataframe `df`

df['col'] = 'str' + df['col'].astype(str)

filter pyspark dataframe column with none value

df.filter('dt_mvmt is NULL')

how to get integer values from a string in python?

map(int, re.findall('\\d+', string1))

how do i abort a socket.recvfrom() from another thread in python?

self._socket.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)

remove first directory from path '/first/second/third/fourth/fifth'

os.path.join(*x.split(os.path.sep)[2:])

is there a random letter generator with a range?

random.choice(['A', 'B', 'C', 'D'])

want to plot pandas dataframe as multiple histograms with log10 scale x-axis

ax.set_xscale('log')

comparing two lists in python

['a', 'c']

how to update an object or bail if it has been deleted in django

thing.save()

remove multiple values from a list `my_list` at the same time with index starting at `2` and ending just before `6`.

del my_list[2:6]

ttk: how to make a frame look like a labelframe?

root.mainloop()

how can i add a comment to a yaml file in python

f.write('# Data for Class A\n')

how can i get an email message's text content using python?

print(part.get_payload())

python: plotting a histogram with a function line on top

plt.show()

replace single quote character in string "didn't" with empty string ''

"""didn't""".replace("'", '')

list manipulation in python with pop()

newlist = [x for x in oldlist if x not in ['a', 'c']]

combine two dictionaries `d ` and `d1`, concatenate string values with identical `keys`

dict((k, d.get(k, '') + d1.get(k, '')) for k in keys)

spaces inside a list

print(' '.join(['{: 3d}'.format(x) for x in rij3]))

format time string in python 3.3

time.strftime('{%Y-%m-%d %H:%M:%S}')

where do you store the variables in jinja?

template.render(name='John Doe')

how do i plot multiple x or y axes in matplotlib?

plt.show()

python numpy 2d array indexing

b[a[1, 1]]

python : how to append new elements in a list of list?

a = [[] for i in range(3)]

how to apply a function to a series with mixed numbers and integers

pd.to_numeric(a, errors='coerce').fillna(-1)

remove a prefix from a string

print(remove_prefix('template.extensions', 'template.'))

how to deal with settingwithcopywarning in pandas?

df.ix[0, 'a'] = 3

get the dictionary values for every key in a list

values = [d[k] for k in a]

check if a given key `key` exists in dictionary `d`

if (key in d): pass

how to query for distinct results in mongodb with python?

Students.objects(name='Tom').distinct(field='class')