Recursion limit

There is a limit to the depth of possible recursion, which depends on the Python implementation. When the limit is reached, a RuntimeError exception is raised:

def cursing(depth):
  try:
    cursing(depth + 1) # actually, re-cursing
  except RuntimeError as RE:
    print('I recursed {} times!'.format(depth))

cursing(0)
# Out: I recursed 1083 times!

It is possible to change the recursion depth limit by using sys.setrecursionlimit(limit) and check this limit by sys.getrecursionlimit().

sys.setrecursionlimit(2000)
cursing(0)
# Out: I recursed 1997 times!

From Python 3.5, the exception is a RecursionError, which is derived from RuntimeError.