Python

RecursionError: maximum recursion depth exceeded

RecursionError

A function called itself too many times. Python's default limit is around 1000.

Common Causes

Missing base case in recursion
Infinite recursion (logic bug)
Deeply nested data structures
Mutual recursion without base case

Fixes

1. Add base case

def fib(n):
    if n <= 1: return n
    return fib(n-1) + fib(n-2)

2. Use iteration instead

def fib(n):
    a, b = 0, 1
    for _ in range(n): a, b = b, a+b
    return a

3. Increase limit (rare)
```
import sys
sys.setrecursionlimit(2000)
```

Still not fixed?

• Search the exact error message on Stack Overflow or GitHub Issues
• Check the official docs for the language or tool
• Ensure your versions (Node, Python, npm, Docker) are up to date
• Try in a minimal reproduction (new project, single file)

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JavaScript Heap Out of Memory IndentationError

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