Fix RuntimeError: Maximum Recursion Limit Reached
Below are some of the ways by which we can fix RuntimeError: Maximum Recursion Limit Reached in Python:
- Adding a base case
- Increasing the recursion limit
- Using an iterative approach
Adding a Base Case
One effective way to prevent RuntimeError: Maximum Recursion Limit Reached is to ensure that the recursive function has a proper stopping condition, commonly referred to as a base case. This ensures that the recursion stops when a certain condition is met.
Python3
def factorial_recursive_with_base_case(n): # Base case: when n is 0, return 1 if n == 0: return 1 # Recursive call return n * factorial_recursive_with_base_case(n - 1)if __name__ == '__main__': # Example: calculating the factorial of 100 result = factorial_recursive_with_base_case(100) print(result) |
Output
93326215443944152681699238856266700490715968264381621468592963895217599993229915608941463976156518286253697920827223758251185210916864000000000000000000000000
Increase Recursion Limit
The “sys” module in Python provides a function called setrecursionlimit() to modify the recursion limit in Python. It takes one parameter, the value of the new recursion limit. By default, this value is usually 10^3. If you are dealing with large inputs, you can set it to, 10^6 so that large inputs can be handled without any errors.
Python3
# importing the sys moduleimport syssys.setrecursionlimit(10**6)def fact(n): if(n == 0): return 1 return n * fact(n - 1)if __name__ == '__main__': # taking input f = 1001 print(fact(f)) |
40278964733717086731724613635692698970509423907492534717634371034036845091102764961263625269545637420528046859880739325469029853986780336746022515349961453558842192859116083367874245135491592125229928...
Using Iteration Instead of Recursion
Another effective way to address RuntimeError: Maximum Recursion Limit Reached is to convert the recursive solution into an iterative one, using loops instead of recursive calls.
Python3
# Function to calculate the factorial of a number using an iterative approachdef factorial_iterative(n): # Initialize the result to 1 result = 1 # Iterate from 1 to n (inclusive) for i in range(1, n + 1): # Multiply the current result by the current value of i result *= i # Return the final result after the loop return result#Examples result = factorial_iterative(1001)print(result) |
40278964733717086731724613635692698970509423907492534717634371034036845091102764961263625269545637420528046859880739325469029853986780336746022515349961453558842192859116083367874245135491592125229928...
Conclusion
In this article we discussed about ways How To Fix Obscure Runtimeerror: Maximum Recursion Limit Reached in Python. It involves understanding its root causes, such as missing base cases or improper recursive logic. By incorporating base cases, adjusting recursive logic, or switching to iterative approaches, developers can effectively resolve the error and ensure that recursive functions terminate appropriately, preventing infinite loops and stack overflow.
Runtimeerror: Maximum Recursion Limit Reached in Python
In this article, we will elucidate the Runtimeerror: Maximum Recursion Limit Reached In Python through examples, and we will also explore potential approaches to resolve this issue.
What is Runtimeerror: Maximum Recursion Limit Reached?
When you run a Python program you may see Runtimeerror: Maximum Recursion Limit Reached. It indicates that the execution of your program has surpassed the recursion limit of the Python interpreter. This typically occurs when a function calls itself recursively, and the recursion doesn’t have a proper stopping condition (base case).
Syntax :
RecursionError: maximum recursion depth exceeded
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