New submission from Luis Franca <lfamo...@gmail.com>:
I've tried to import a module from a fat jar file and got a
ModuleNotFoundError: No module named ... error.
I checked that the jar file had more than 65k files and was created using
Zip64. When I unzip the file, Python is capable of importing the modules.
I was able to reproduce the error on a simple project, such as:
simplePackage/
__init__.py
a/
__init__.py
moduleA.py
where
- I'm using Python 3.9.4
- __init__.py files are empty
- moduleA.py only has a printA() function
I ran the following tests:
1. When importing from the folder, it works
python
>>> import sys
>>> sys.path.append('C:\\Users\\...\\simplePackage')
>>> from a.moduleA import printA
>>> printA()
I'm module a
2. When zipping the folder, it works
python
>>> import sys
>>> sys.path.append('C:\\Users\\...\\simplePackage.zip')
>>> from a.moduleA import printA
>>> printA()
I'm module a
3. When forcing to zip with Zip64 it doesn't work
On linux: zip -fzr simple64Package.zip .
python
>>> import sys
>>> sys.path.append('C:\\Users\\...\\simple64Package.zip')
>>> from a.moduleA import printA
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
ModuleNotFoundError: No module named 'a'
Is this an expected behavior? Am I missing something?
Thanks!
----------
components: Library (Lib)
messages: 404792
nosy: lfamorim
priority: normal
severity: normal
status: open
title: Cannot import modules from Zip64 files
type: behavior
versions: Python 3.9
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Python tracker <rep...@bugs.python.org>
<https://bugs.python.org/issue45576>
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