运行时间不定python脚本

Question

I have a python script that goes like this -

import..
def main ():
  some_condition check
  main() #calling main again
  some condition check
  main() #calling main again
main()

The idea here is to let the script run indefinitely and check for something. This way of calling main() somehow seems incorrect. I am quite new to Python scripting. Can someone guide me if this very inefficient and if yes then how do I achieve this?

Answer 1

What you are doing is called recursion. This is certainly not good for long running applications, since it would cause a stack overflow.

Do your checking like this:

quit = False
while not quit:
   do_your_check()
   #maybe sleep
   quit = should_i_stop()

Answer 2

Just put the things you want to do in a while true loop.

import ...
def main():
  while True:
    some_condition check

Recursion is utilized when it is too complex/hard to write as iterative code. eg Tree traversals.