__qualname__ different when calling generator object w/ functions.partial

[DinoV]

BPO	26093
Nosy	@brettcannon, @DinoV, @corona10, @tirkarthi, @isidentical

^{Note: these values reflect the state of the issue at the time it was migrated and might not reflect the current state.}

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GitHub fields:

assignee = None
closed_at = <Date 2019-10-03.18:12:30.026>
created_at = <Date 2016-01-12.22:33:48.049>
labels = ['interpreter-core', 'type-bug']
title = '__qualname__ different when calling generator object w/ functions.partial'
updated_at = <Date 2019-10-03.18:12:30.023>
user = 'https://github.com/DinoV'

bugs.python.org fields:

activity = <Date 2019-10-03.18:12:30.023>
actor = 'corona10'
assignee = 'none'
closed = True
closed_date = <Date 2019-10-03.18:12:30.026>
closer = 'corona10'
components = ['Interpreter Core']
creation = <Date 2016-01-12.22:33:48.049>
creator = 'dino.viehland'
dependencies = []
files = []
hgrepos = []
issue_num = 26093
keywords = []
message_count = 3.0
messages = ['258119', '350396', '353870']
nosy_count = 5.0
nosy_names = ['brett.cannon', 'dino.viehland', 'corona10', 'xtreak', 'BTaskaya']
pr_nums = []
priority = 'normal'
resolution = 'fixed'
stage = 'resolved'
status = 'closed'
superseder = None
type = 'behavior'
url = 'https://bugs.python.org/issue26093'
versions = ['Python 3.5']

[DinoV]

import functools
def f():
    def g():
        yield 1
    return g

functools.partial(f())().__qualname__ != f()().__qualname__

The qualified name gets passed in via the interpreter loop with _PyEval_EvalCodeWithName calling PyGen_NewWithQualName. If a generator object gets called from C then the qualified name gets lost.

It seems like _PyEval_EvalCodeWithName shouldn't exist and the generator code object should be able to get back to its qualified name so subtle differences like this don't happen.

[isidentical]

This bug is fixed in 3.9 (probably in 3.8 too)

[corona10]

Python 3.9.0a0 (heads/bpo-31722:fc4a044a3c, Oct  4 2019, 03:10:14)
[Clang 11.0.0 (clang-1100.0.33.8)] on darwin
Type "help", "copyright", "credits" or "license" for more information.
>>> import functools
>>> def f():
...     def g():
...         yield 1
...     return g
...
>>> functools.partial(f())().__qualname__ == f()().__qualname__
True
>>> functools.partial(f())().__qualname__
'f.<locals>.g'
>>> f()().__qualname__
'f.<locals>.g'

Looks like that this issue is fixed