On Thu, 29 Sep 2005 15:57:47 -0400, M.N.A.Smadi wrote: > This has nothing to do with how the argument is passed. It is prob > something wrong with str.pop in my python because when i run python and type > import os > import string > x = '1 2 3' > x.pop() > > i get the following error > Traceback (most recent call last): > File "<stdin>", line 1, in ? > AttributeError: 'str' object has no attribute 'pop'
That's because strings don't have a pop method, just like the error says. Did you read the error? Error messages frequently tell you what the error is. Lists have a pop method. You can't pop from a string. If you try to pop from a string, you will get an error. You tried to pop from a string, and it gave an error. The error told you what you did wrong: you tried to pop from a string. Why are you surprised? Go back to your code. Look at the variable that you are trying to pop from, and notice that it is a string, just like the error message says. Now search back through your code until you find the place where you assign a string to that variable. Don't assign a string to it. Problem fixed. Like I said the first time I answered your question, I think your problem is that you are passing in a single argument string like: "this is a list of commands" instead of a real list like: ["this", "is", "a", "list", "of", "commands"] As I also said the first time I answered this, you may find the split() string method useful for creating that list. (Hint: if x is a string, you call x.split() and get back a list.) For future reference: any time you think you have found a bug in Python, the chances are about 999,999 in a million that you've found a bug in your code. -- Steven. -- http://mail.python.org/mailman/listinfo/python-list
