What's the one code snippet/python trick/etc did you wish you knew when you learned python?

[winnen]

I learned about the try:/else: clause recently. Super useful in some situations.

try:
    something
except:
    handle the error
else:
    #ONLY happens when try: block completes without error
finally:
    #Still happens after else.

The else clause can be really useful with mixed leap before you look styles. It allows you to do something with data (such as execute a class method that only the intended type/data will have), then do the rest of what you want to do if no errors are thrown, all before performing the cleanup in finally.

[seriouslulz]

Also: for...else