Python Tips

Python takes some getting used to. The clean syntax is great, but it has some things which a Java or Ruby programmer might not guess.

How to tell if an object is None

This won't parse: <geshi lang="python"> user = users.get_current_user() if !user:

   gologin()

</geshi>

This works: <geshi lang="python"> if not bool(user):

   gologin()

</geshi>

As does: <geshi lang="python"> if user == None:

   gologin()

</geshi>

But this is probably best: <geshi lang="python"> if user is None:

   gologin()

</geshi>

This article "what exactly is "None"" helped explain this a little better.