~/tmp $ python post.py                                                                                                                   
Traceback (most recent call last):                                                                                                       
  File "post.py", line 1, in <module>
    import httplib, mimetypes
  File "/usr/lib/python2.6/mimetypes.py", line 27, in <module>
    import urllib
  File "/home/tdn/tmp/urllib.py", line 2, in <module>
    response = urllib.urlopen('http://python.org/')
AttributeError: 'module' object has no attribute 'urlopen'
Error in sys.excepthook:
Traceback (most recent call last):
  File "/usr/lib/python2.6/dist-packages/apport_python_hook.py", line 38, in apport_excepthook
    from apport.packaging_impl import impl as packaging
  File "/usr/lib/python2.6/dist-packages/apport/__init__.py", line 1, in <module>
    from apport.report import Report
  File "/usr/lib/python2.6/dist-packages/apport/report.py", line 14, in <module>
    import subprocess, tempfile, os.path, urllib, re, pwd, grp, os, sys
  File "/home/tdn/tmp/urllib.py", line 2, in <module>
    response = urllib.urlopen('http://python.org/')
AttributeError: 'module' object has no attribute 'urlopen'

Original exception was:
Traceback (most recent call last):
  File "post.py", line 1, in <module>
    import httplib, mimetypes
  File "/usr/lib/python2.6/mimetypes.py", line 27, in <module>
    import urllib
  File "/home/tdn/tmp/urllib.py", line 2, in <module>
    response = urllib.urlopen('http://python.org/')
AttributeError: 'module' object has no attribute 'urlopen'