A Python problem?

[Charles G Waldman]

Colin J. Williams writes:
 > def main():
 >   import sys
 >   print 'Start:',dir()
 >   s0= sys.modules
 >   import plugins.rptlib
 >   s1= sys.modules
 >   if s0 == s1:
 >     print 'sys.modules is unchanged'

This will *always* print "sys.modules is unchanged";  sys.modules is a 
dictionary, which is a mutable type.

If you want to see if sys.modules changed, try this:

s0 = sys.modules.copy()
import stuff
if sys.modules == s0:
   print "it's unchanged"