What does {!r} mean in Python?

I was reading some numpy codes when I found this: tup = (slice(None),None) X -= X.mean(1) [tup] where X is a numpy array. Could anyone explain this line of code? Especially what the (slice(None), None) part? The python documentation has explanation...

I have a average sized 4 year female python. Im quite close with this python and i allow it to roam around the house when it feel like it.. For the past week when i go to sleep my ...show more

i dont get what it means by lesser when someone says they have a lesser ball python

I just found out right now as I was getting to feed my ball python "Lady" that she was dead. :"( I loved her soooo much. I started noticing that there was a bloody meat looking thing coming out of her rectum. I was afraid to touch it and...

this is a first i seen her doing this but. my ball python dug herself under the substrate and some moss i keep in there for humidity. shes been like that for a while now and i dont know why?

It'd be great if you could substantiate and clarify each point with actual code example containing both bad and good ways of doing something. Quoting The Zen of Python: Beautiful is better than ugly. Explicit is better than implicit. Simple is better...

In the following code for example, what does '*' mean? def cheeseshop(kind, *arguments, **keywords): print "-- Do you have any", kind, "?" print "-- I'm sorry, we're all out of", kind for arg in arguments: print arg...