Package: attrmap
AttrMapattrmapis an open source tool withread-only protectionto help users get rid of dictionary in Python.Introductionattrmapmaps thedictto an object ofAttrMap, so users can avoid using the annoying[""]syntax.Users are welcome to report issues or request new features.The API references can be foundhere.What's New2022-12-20: Fix the annoying warning when creating an AttrMap instance.2022-08-27: Add utilities for AttrMap, seedocs.2022-08-27: Add deprecated warnings.2022-08-13: Fix thedelattrbug, users can delete an item viadel obj.attrwhen theAttrMapobject is modifiable.2022-08-13: Fix the improper use of type hint, nowattrmapis available for python>=3.6.2022-08-13: Update the document.InstallationYou can installattrmapvia pip:pipinstall-UattrmapGetting StartedAssuming you have an instance ofdict, then you can build an object ofAttrMapas follows:fromattrmapimportAttrMapimportattrmap.utilsasauCONFIGS={"attr1":1,"attr2":["hello"," ","world"],"attr3":{"subattr1":"subattr1","subattr2":{"subsubattr1":"subsubattr1",}}}configs=AttrMap(CONFIGS)# Set the object unmodifiable.configs=au.convert_state(configs,read_only=True)# Equivalent to:# au.convert_state(configs, read_only=True)print(configs)# The outputs is more human readable.# Object Contains Following Attributes#  attr1: 1#  attr2: ['hello', ' ', 'world']#  attr3:#          subattr1: subattr1#          subattr2:#                  subsubattr1: subsubattr1You can also assign the attributes and their values in a more simple way:# Assume you have import AttrMap# Create an empty AttrMap object.configs=AttrMap()configs.attr1=1configs.attr2=["hello"," ","world"]configs.attr3.subattr1="subattr1"configs.attr3.subattr2.subsubattr1="subsubattr1"print(configs)# Object Contains Following Attributes#  attr1: 1#  attr2: ['hello', ' ', 'world']#  attr3:#          subattr1: subattr1#          subattr2:#                  subsubattr2: subsubattr1You can convert theAttrMapobject to Pythondictanytime:configs_dict=au.todict(configs)print(configs_dict)# {'attr1': 1, 'attr2': ['hello', ' ', 'world'], 'attr3': {'subattr1': 'subattr1', 'subattr2': {'subsubattr1': 'subsubattr1'}}}print(type(configs_dict))# <class 'dict'># AttrMap object doesn't store the original dict.print(id(configs_dict))# 139881853477376print(id(CONFIGS))# 139881853478464# But it do not change the items:print(configs_dict==CONFIGS)# Trueattrmaphas theread-onlyprotection to protect you from unintentional modification:# Assume you have the above AttrMap object named configs# Now set the AttrMap object as read-only.configs=au.convert_state(configs,read_only=True)# Try to create a new attribute.configs.attr4="unintentional modification"# Traceback (most recent call last):#   File "<stdin>", line 1, in <module>#   File "/xxxx/attrmap.py", line 558, in __setattr__#     self._check_modifiable()#   File "/xxxx/attrmap.py", line 643, in _check_modifiable#     raise AttributeError(# AttributeError: Modifying the attributes of a read-only AttrMap instance is not allowed.# Try to modify the value of existing attribute:configs.attr1="unintentional modification"# Traceback (most recent call last):#   File "<stdin>", line 1, in <module>#   File "/xxxx/attrmap.py", line 558, in __setattr__#     self._check_modifiable()#   File "/xxxx/attrmap.py", line 643, in _check_modifiable#     raise AttributeError(# AttributeError: Modifying the attributes of a read-only AttrMap instance is not allowed.Theread-onlyprotection is quite useful when you use theAttrMapobject to store the configuration of any system, any unintentional modification is not allowed. If you want to update the attribute's value, just set theread_onlyof theAttrMapinstance asFalseviaau.convert_state(obj, read_only=False).If theAttrMapobject should be unmodifiable, setting the object asread-onlyis recommended.You can also build anAttrMapinstance from a.jsonor.yamlfile. For example, assume you have afile.jsonfile:{"language":["python","cpp","java"],"value":[["one","two"]],"structure":{"tree":["left tree","right tree"]}}Then you can buildAttrMapobject via:fromattrmapimportAttrMapconfigs=AttrMap(path2file="/PATH_TO_YOUR_DIRECTORY/file.json")# .yaml file works too.print(configs)# Object Contains Following Attributes#  language: ['python', 'cpp', 'java']#  value: [['one', 'two']]#  structure:#          tree: ['left tree', 'right tree']NOTE:Theread-onlyprotection should be explicitly enabled,AttrMapassumes you are still setting the attributes and their values.Known IssuesAttributes start with_might be conflict withAttrMapperserved methods/properties. Attributes can still be accessed via dict-style ([""]), but the attribute-style
will return the "protected" (not the term of python, only means it's not "public") method such as_build_from_dict.Some public available properties and methods are reserved, they can only accessed via the dict-style.Running TestsOpen bash shell and execute:bash-i./auto_test.shAPIsSeeThe API ReferenceTODOLICENSEAttrMapis an open source tool under Apache 2.0 license.Copyright 2022 Yiqun Chen. All rights reserved.Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License athttp://www.apache.org/licenses/LICENSE-2.0Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.Apache License
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