在 2013年1月29日星期二UTC+8下午9时33分26秒，Steven D'Aprano写道： > 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
just in order to get the full path name of each file . -- http://mail.python.org/mailman/listinfo/python-list
