objname

A library with a base class that stores the assigned name of an object.

>>> import objname
>>> x, y = objname.AutoName()
>>> x.name
'x'
>>> y.name
'y'

Official documentation at readthedocs: https://objname.readthedocs.io/en/latest/

Table Of Contents

• Requirements
• Installation
• Tutorial
• Observations
  • How it works
  • Multiple assignment syntax
• API reference
  • class AutoName()
• Contribute
• Donation
• License

Requirements

objname requires Python 3.6 or newer. It has no third-party dependencies and works on both POSIX and Windows. It runs in cPython and PyPy.

Installation

To install it just use pip:

$ pip install objname

You can also install it from github:

$ pip install git+https://github.com/AlanCristhian/objname.git

Tutorial

objname has only one class: AutoName. It creates an object with the objname attribute that stores the name of such object. E.g:

>>> import objname
>>> a = objname.AutoName()
>>> a.name
'a'

It can make multiple variables with iterable unpacking syntax.

>>> import objname
>>> x, y = objname.AutoName()
>>> x.name
'x'
>>> y.name
'y'

You can make your own subclass that inherit from objname.AutoName.

>>> import objname
>>> class Number(objname.AutoName):
...     def __init__(self, value):
...         super().__init__()
...         self.value = value
...
>>> a = Number(1)
>>> a.name
'a'
>>> a.value
1

Observations

How it works

AutoName searches the name of the object in the bytecode of the frame where the object was created. If it can't find a name, then the default '<nameless>' value are set.

Multiple assignment syntax

AutoName stores the last name in the expression.

>>> import objname
>>> a = b = objname.AutoName()
>>> a.name
'b'
>>> b.name
'b'

That is the same behaviour of __set_name__ method.

>>> class SetName:
...     def __set_name__(self, owner, name):
...         self.name = name
...
>>> class MyClass:
...     a = b = SetName()
...
>>> MyClass.a.name
'b'
>>> MyClass.b.name
'b'

API reference

class AutoName()

Stores the assigned name of an object in the name attribute.

Single assignment:

>>> obj = AutoName()
>>> obj.name
'obj'

Iterable unpacking syntax:

>>> a, b = AutoName()
>>> a.name
'a'
>>> b.name
'b'

Contribute

• Issue Tracker: https://github.com/AlanCristhian/objname/issues
• Source Code: https://github.com/AlanCristhian/objname

Donation

Buy Me a Coffee 🙂: https://www.paypal.com/donate?hosted_button_id=KFJYZEVQVRQDE

License

The project is licensed under the MIT license.