Objects with __name__ attribute

[Peter Otten]

ast wrote:

> Hi,
> 
> I know two Python's objects which have an intrinsic
> name, classes and functions.
> 
> def f():
>     pass
> 
>>>> f.__name__
> 'f'
>>>> g = f
>>>> g.__name__
> 'f'
> 
> class Test:
>     pass
> 
>>>> Test.__name__
> 'Test'
>>>> Test2 = Test
>>>> Test2.__name__
> 'Test'
> 
> Are there others objects with a __name__ attribute
> and what is it used for ?
> 
> Regards

It was used for the object's repr():

$ python
Python 2.7.6 (default, Oct 26 2016, 20:30:19) 
[GCC 4.8.4] on linux2
Type "help", "copyright", "credits" or "license" for more information.
>>> def f(): pass
... 
>>> f.__name__ = "spanish inquisition"
>>> f
<function spanish inquisition at 0x7faad26ed7d0>

But this has changed:

$ python3
Python 3.4.3 (default, Nov 17 2016, 01:08:31) 
[GCC 4.8.4] on linux
Type "help", "copyright", "credits" or "license" for more information.
>>> def f(): pass
... 
>>> f.__name__ = "spanish inquisition"
>>> f
<function f at 0x7f302fc20bf8>
>>> f.__qualname__ = "spanish inquisition"
>>> f
<function spanish inquisition at 0x7f302fc20bf8>

You should be aware that the module name is used to detect the main module:

if __name__ == "__main__":
    print("this is run as a script")