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type of __builtins__ changes if in main module or not #48832

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nnorwitz mannequin opened this issue Dec 7, 2008 · 2 comments
Closed

type of __builtins__ changes if in main module or not #48832

nnorwitz mannequin opened this issue Dec 7, 2008 · 2 comments
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interpreter-core (Objects, Python, Grammar, and Parser dirs) type-bug An unexpected behavior, bug, or error

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@nnorwitz
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Mannequin

nnorwitz mannequin commented Dec 7, 2008

BPO 4582
Nosy @loewis

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 2008-12-07.20:57:07.674>
created_at = <Date 2008-12-07.20:48:38.718>
labels = ['interpreter-core', 'type-bug']
title = 'type of __builtins__ changes if in main module or not'
updated_at = <Date 2008-12-07.20:57:07.673>
user = 'https://bugs.python.org/nnorwitz'

bugs.python.org fields:

activity = <Date 2008-12-07.20:57:07.673>
actor = 'loewis'
assignee = 'none'
closed = True
closed_date = <Date 2008-12-07.20:57:07.674>
closer = 'loewis'
components = ['Interpreter Core']
creation = <Date 2008-12-07.20:48:38.718>
creator = 'nnorwitz'
dependencies = []
files = []
hgrepos = []
issue_num = 4582
keywords = []
message_count = 2.0
messages = ['77252', '77254']
nosy_count = 2.0
nosy_names = ['loewis', 'nnorwitz']
pr_nums = []
priority = 'normal'
resolution = 'wont fix'
stage = None
status = 'closed'
superseder = None
type = 'behavior'
url = 'https://bugs.python.org/issue4582'
versions = []
@nnorwitz
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nnorwitz mannequin commented Dec 7, 2008

This happens on 2.4 and 3.0, probably all versions:

When running this simple program (save to a file):

print(type(__builtins__))
__import__(__file__.split('/')[-1][:-3])

I get:
<type 'module'>
<type 'dict'>

I would expect the type to be consistent regardless of whether executing
the main module or from the imported module. I haven't looked into why
this is happening or if it makes sense. It was unexpected.

@nnorwitz nnorwitz mannequin added interpreter-core (Objects, Python, Grammar, and Parser dirs) type-bug An unexpected behavior, bug, or error labels Dec 7, 2008
@loewis
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loewis mannequin commented Dec 7, 2008

This is documented, intentional behavior:

http://docs.python.org/library/__builtin__.html?highlight=__builtins__

@loewis loewis mannequin closed this as completed Dec 7, 2008
@ezio-melotti ezio-melotti transferred this issue from another repository Apr 10, 2022
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