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classification
Title: 2to3: Local package import
Type: Stage:
Components: 2to3 (2.x to 3.x conversion tool) Versions: Python 3.1
process
Status: closed Resolution: fixed
Dependencies: Superseder:
Assigned To: Nosy List: alejolp, benjamin.peterson, djc
Priority: normal Keywords:

Created on 2009-07-03 13:50 by alejolp, last changed 2022-04-11 14:56 by admin. This issue is now closed.

Files
File name Uploaded Description Edit
2to3-os.path.sep.path alejolp, 2009-07-03 13:50
Messages (3)
msg90055 - (view) Author: Alejandro Santos (alejolp) Date: 2009-07-03 13:50
The 2to3 tool shipped with Python 3.1 final doesn't handle correctly a
local package import (fixer fix_import). Test case:

$ find . -name '*.py'
./__init__.py
./a.py
./b/__init__.py
./b/m.py

$ 2to3 a.py
RefactoringTool: Skipping implicit fixer: buffer
RefactoringTool: Skipping implicit fixer: idioms
RefactoringTool: Skipping implicit fixer: set_literal
RefactoringTool: Skipping implicit fixer: ws_comma
RefactoringTool: No files need to be modified.

$ cat a.py

from b import m

m.q()


Trying to use the 2to3 tool from one level up won't work either:

$ 2to3 test2to3/a.py
RefactoringTool: Skipping implicit fixer: buffer
RefactoringTool: Skipping implicit fixer: idioms
RefactoringTool: Skipping implicit fixer: set_literal
RefactoringTool: Skipping implicit fixer: ws_comma
RefactoringTool: No files need to be modified.

It seems to be a bug in the fixer, which is using the os.path.pathsep
constant when it should be using the os.path.sep instead. 

The probably_a_local_import function is checking if "test2to3/b:"
exists, when it should be checking against: "test2to3/b/"

Attached patch seems to be working:

$ 2to3 test2to3/a.py
RefactoringTool: Skipping implicit fixer: buffer
RefactoringTool: Skipping implicit fixer: idioms
RefactoringTool: Skipping implicit fixer: set_literal
RefactoringTool: Skipping implicit fixer: ws_comma
--- test2to3/a.py (original)
+++ test2to3/a.py (refactored)
@@ -1,5 +1,5 @@
 
-from b import m
+from .b import m
 
 m.q()
 
RefactoringTool: Files that need to be modified:
RefactoringTool: test2to3/a.py
msg90057 - (view) Author: Benjamin Peterson (benjamin.peterson) * (Python committer) Date: 2009-07-03 14:03
Fixed in r73811.
msg90058 - (view) Author: Alejandro Santos (alejolp) Date: 2009-07-03 14:04
Nice, Thanks!
History
Date User Action Args
2022-04-11 14:56:50adminsetgithub: 50657
2009-07-03 14:04:50alejolpsetmessages: + msg90058
2009-07-03 14:03:35benjamin.petersonsetstatus: open -> closed

nosy: + benjamin.peterson
messages: + msg90057

resolution: fixed
2009-07-03 13:50:35alejolpcreate