iMath wrote: > why [os.path.join(r'E:\Python', name) for name in []] returns [] ?
Because you are iterating over an empty list, []. That list comprehension is the equivalent of: result = [] for name in []: result.append( os.path.join(r'E:\Python', name) ) Since you iterate over an empty list, the body of the loop never executes, and the result list remains empty. What did you expect it to do? -- Steven -- http://mail.python.org/mailman/listinfo/python-list