python 3 recursion interrupt?

Question

Python

Is it possible to somehow interrupt or stop, reset, cut off, cut off, at least lengthen, make it infinite, or disable, recursion in python without return (it does not help in my script), can sys or os fix this?

Answer 1

You can make your own exception, raise this exception in the right place and catch it outside.

import random

class StopRecursion(Exception):
  pass

def some_recursive_function(depth=0):
  print ("depth=%d" % depth)
  # играем в русскую рулетку
  if random.randint(1,6) == 4:
    raise StopRecursion
  some_recursive_function(depth+1)

try:
  some_recursive_function()
except StopRecursion:
  print ("Recursion stopped")