exit(0) in python code example

Example 1: exit python script

import sys
sys.exit()

Example 2: why doesn't sys.exit work?

import sys

try:
    sys.exit() # this always raises SystemExit
except SystemExit:
    print("sys.exit() worked as expected")
except:
    print("Something went horribly wrong") # some other exception got raised

Example 3: exit in python

import sys
msg = "bye bye"
sys.exit(msg)
# you can use it with out a msg