all Python 3sysfunction

sys.getrecursionlimit()

recursion

Return the interpreter's current maximum recursion depth (1000 by default); exceeding it raises RecursionError.

Syntax

sys.getrecursionlimit() -> int

The number counts frames on the whole interpreter stack, not just calls of your own function, so recursion started deep inside other calls hits RecursionError well before a thousand levels. It is a process-wide safety valve rather than a precise depth budget for your algorithm, and it says nothing about available memory.

Examples

import sys
print(sys.getrecursionlimit())  # → 1000
print(isinstance(sys.getrecursionlimit(), int))  # → True
sys.setrecursionlimit(2000)
print(sys.getrecursionlimit())  # → 2000
sys.setrecursionlimit(1000)  # вернули значение по умолчанию

def deep(n): return deep(n + 1)
print(deep(0))  # → RecursionError

See also

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