A 'RecursionError' occurs when the maximum recursion depth is exceeded. Review your recursive function to ensure it has a proper base case to terminate recursion and avoid infinite loops.

The 'RecursionError' in Python is raised when a recursive function exceeds the maximum recursion depth, which is set to prevent infinite recursion from crashing the program. This error often indicates that the base case for terminating recursion is not being reached, leading to an infinite loop. To resolve this issue, review your recursive function and ensure that it includes a well-defined base case that allows the function to exit gracefully when a certain condition is met. For example, in a function that calculates the factorial of a number, the base case should handle the condition when the input is 1 or 0. Additionally, you can adjust the maximum recursion depth using the sys.setrecursionlimit() function, but this should be done with caution, as it could lead to crashes if set too high. For deep recursive calls, consider rewriting the function using an iterative approach, which can handle larger datasets without hitting recursion limits. By implementing these strategies, you can effectively manage RecursionErrors in your Python applications.