fix_import prefixes "." to already relative imports

[shlomme]

BPO	8608
Nosy	@bitdancer
Superseder	bpo-8553: 2to3 breaks relative imports
Files	fix-no-prefix-relative-import.diff: Patch for bug fix-no-prefix-relative-import.bundle: HG bundle with revision

^{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 2010-05-04.12:12:49.803>
created_at = <Date 2010-05-04.08:58:05.144>
labels = ['type-bug', 'expert-2to3']
title = 'fix_import prefixes "." to already relative imports'
updated_at = <Date 2010-05-04.12:12:49.796>
user = 'https://bugs.python.org/shlomme'

bugs.python.org fields:

activity = <Date 2010-05-04.12:12:49.796>
actor = 'r.david.murray'
assignee = 'none'
closed = True
closed_date = <Date 2010-05-04.12:12:49.803>
closer = 'r.david.murray'
components = ['2to3 (2.x to 3.x conversion tool)']
creation = <Date 2010-05-04.08:58:05.144>
creator = 'shlomme'
dependencies = []
files = ['17196', '17197']
hgrepos = []
issue_num = 8608
keywords = ['patch']
message_count = 4.0
messages = ['104914', '104915', '104916', '104926']
nosy_count = 2.0
nosy_names = ['shlomme', 'r.david.murray']
pr_nums = []
priority = 'normal'
resolution = 'duplicate'
stage = 'resolved'
status = 'closed'
superseder = '8553'
type = 'behavior'
url = 'https://bugs.python.org/issue8608'
versions = []

[shlomme]

The fixer for absolute -> relative imports prefixes "." to already relative imports, i.e.

    from . import something

will be converted into

    from .. import something

if something.py exists. This of course will raise an exception on import or introduce subtle bugs if something exists in ..

I've attached a patch against 2to3 head which addresses this problem.

[shlomme]

This file contains the same patch, but as a mercurial revision bundle.

[shlomme]

Forgot the file name last time.

[bitdancer]

Thanks, but this is a duplicate of bpo-8553, which has already been fixed.