What is the maximum number of levels of nested recursive calls in Python that is practically allowed?

In Python, the default maximum recursion depth is limited to about 1000 calls (the value of sys.getrecursionlimit()). This is done to prevent stack overflow and program crashes. In practice, the recursion depth depends on the task and available memory, but exceeding this value without a special need is not recommended.

If necessary, you can change the limit using sys.setrecursionlimit(), but you should do this carefully to avoid causing the interpreter to crash.

Example of checking and changing the limit:

import sys
print(sys.getrecursionlimit())  # Usually 1000
sys.setrecursionlimit(1500)      # Set a new limit