module not found, is ok?

[3Pinter]

I created a own __init__.py which call in a script.
Works just fine.

However, I renamed a module (all to lowercase), so a script obviously doesn't find the module.

Which raised the question, do you try to catch this error? o

import mymodule
if mymodule.MyFunc:
       # MyFunc doesn't exist. myfunc does

or is this a case of 'you have to code correct'?