Is Python variable assignment atomic?

Question

Let\'s say I am using a signal handler for handling an interval timer.

def _aHandler(signum, _):
  global SomeGlobalVariable
  SomeGlobalVariabl         


        

Answer 1

Simple assignment to simple variables is "atomic" AKA threadsafe (compound assignments such as += or assignments to items or attributes of objects need not be, but your example is a simple assignment to a simple, albeit global, variable, thus safe).