"""
testImportRe.py

Import a specific re.py so that recompilation of the .pyc can be seen.

Create a directory accessible from Linux and Windows and copy this file to it.
Create a subdirectory named lib and copy re.py from Python-2.6 to lib.

Run this file. First in Linux, then Window, then Linux, using -v flag,
then scroll up to see the "wrote re.pyc" line.

See log of tests below.
"""

import sys
if 're' in sys.modules:
    del sys.modules['re']
sys.path.insert(0, 'lib')
import re

"""
2012/07/12

In the following test, Linux is using Python-2.6.5 and Windows Python-2.6.2.
The difference between these bugfix versions makes no difference to the test.
Andrew MacKeith

Linux 64 bit

>python26 -v testImportRe.py

Python 2.6.2 (r262:71600, Jul  8 2010, 11:49:56)
[GCC 4.1.2 20070115 (SUSE Linux)] on linux2
Type "help", "copyright", "credits" or "license" for more information.

import re # from lib/re.py
# wrote lib/re.pyc

quicksim@/u/users/omh/work/testimportmtime>ls -l lib/re*
-rwxr-x--- ... 12966 Jan  1  2009 lib/re.py*
-rwxr-x--- ... 12807 Jul 12 11:07 lib/re.pyc*

Windows 64 bit

Python 2.6.5 (r265:79096, Mar 19 2010, 18:02:59) [MSC v.1500 64 bit (AMD64)] on win32
Type "help", "copyright", "credits" or "license" for more information.
# lib\re.pyc has bad mtime
import re # from lib\re.py
# wrote lib\re.pyc

X:\work\testimportmtime>ls -l lib/re*
-rwxrwxrwa  ...  12966 Jan  1  2009 lib/re.py
-rwxrwxrwa  ...  12807 Jul 12 11:09 lib/re.pyc

back to Linux

Python 2.6.2 (r262:71600, Jul  8 2010, 11:49:56)
[GCC 4.1.2 20070115 (SUSE Linux)] on linux2
Type "help", "copyright", "credits" or "license" for more information.
# lib/re.pyc has bad mtime
import re # from lib/re.py
# wrote lib/re.pyc

quicksim@/u/users/omh/work/testimportmtime>ls -l lib/re*
-rwxr-x--- 1 omh hks 12966 Jan  1  2009 lib/re.py*
-rwxr-x--- 1 omh hks 12807 Jul 12 11:11 lib/re.pyc*

Linux Python version details:
Python 2.6.2 (r262:71600, Jul  8 2010, 11:49:56)
[GCC 4.1.2 20070115 (SUSE Linux)] on linux2
Type "help", "copyright", "credits" or "license" for more information.
>>> import platform
>>> print platform.platform()
Linux-2.6.18-194.el5-x86_64-with-redhat-5.5-Tikanga
>>> print platform.architecture()
('64bit', 'ELF')
>>> print platform.python_compiler()
GCC 4.1.2 20070115 (SUSE Linux)
>>>

Windows Python version details:
Python 2.6.5 (r265:79096, Mar 19 2010, 18:02:59) [MSC v.1500 64 bit (AMD64)] on win32
Type "help", "copyright", "credits" or "license" for more information.
>>> import platform
>>> print platform.platform()
Windows-post2008Server-6.1.7601-SP1
>>> print platform.architecture()
('64bit', 'WindowsPE')
>>> print platform.python_compiler()
MSC v.1500 64 bit (AMD64)
>>>
"""