Python asynchronous - how to fix the error?

Question

Python

There is a simple server that receives data from the client, and depending on which line it receives, performs different actions ( link to pastebin ).
The server performs its functions, but with any access to it, it writes to the console:

error: uncaptured python exception, closing channel <__main__.EchoHandler 37.55.139.97:50573 at 0xb738bc4c> (:tuple index out of range [/usr/lib/python3.3/asyncore.py|read|83] [/usr/lib /python3.3/asyncore.py|handle_read_event|441] [./srv.py|handle_read|19])

What does this actually mean, and how to get rid of it?

Answer 1

Written: tuple index out of range
Accessed a tuple by an index that does not exist in it.
Probably somewhere here:
setData = query.split(' ')
setQuerry = tuple(setData)
querySet = (setQuerry[0],setQuerry[1],setQuerry[2],setQuerry[3],setQuerry[4])
What to do?
1) Beat the ruler on the hands until you learn how to check the necessary conditions.
2) Learn Python's syntax and the standard library so you don't have to write shitty code like the three lines above.