Question

I have two variables ‘usrpermnet’ and ‘usrpermdev’ that can have length of 0 or not. I want compare those length. I wrote this in tornado

if len(usrpermdev) > 0
    usrperm = usrpermdev
else
    usrperm = usrpermnet

but I have an error.

Which is the way in that I have to write? Thank you.

Answer 1

You’re missing the colons:

if len(usrpermdev) > 0:
    usrperm = usrpermdev
else:
    usrperm = usrpermnet

This has nothing to do with Tornado; it’s basic Python. You might want to have a look at the Python Tutorial.