Python | sys.setrecursionlimit() method

This sys module provides access to some variables used or maintained by the interpreter and to functions that interact strongly with the interpreter. It provides information about constants, functions and methods of python interpreter. It can be used for manipulating Python runtime environment.

sys.setrecursionlimit() method is used to set the maximum depth of the Python interpreter stack to the required limit. This limit prevents any program from getting into infinite recursion, Otherwise infinite recursion will lead to overflow of the C stack and crash the Python.

Note: The highest possible limit is platform-dependent. This should be done with care because too-high limit can lead to crash.

Syntax: sys.setrecursionlimit(limit)

Parameter:
limit: It the value of integer type that denotes the new limit of python interpreter stack.

Return Value: This method returns nothing.

Example #1 :

# Python program to explain sys.setrecursionlimit() method

# Importing sys module
import sys

# Using sys.getrecursionlimit() method
# to find the current recursion limit
limit = sys.getrecursionlimit()

# Print the current limit
print('Before changing, limit of stack =', limit)

# New limit
Newlimit = 500

# Using sys.setrecursionlimit() method
sys.setrecursionlimit(Newlimit)

# Using sys.getrecursionlimit() method
# to find the current recursion limit
limit = sys.getrecursionlimit()

# Print the current limit
print('After changing, limit of stack =', limit)

Output:

Before changing, limit of stack = 1000
After changing, limit of stack = 500