Python递归报错：RuntimeError: maximum recursion depth exceeded in comparison

Python中默认的最大递归深度是989，当尝试递归第990时便出现递归深度超限的错误：

RuntimeError: maximum recursion depth exceeded in comparison

简单方法是使用阶乘重现：

 1 #! /usr/bin/env Python
 2 
 3 def factorial(n):
 4 
 5     if n == 0 or n == 1:
 6 
 7         return 1
 8 
 9     else:
10 
11         return(n * factorial(n - 1))

>>> factorial(989)

...

>>>factorial(990)

...

RuntimeError: maximum recursion depth exceeded in comparison

解决方案：

可以手动设置递归调用深度：

>>> import sys
>>> sys.setrecursionlimit(10000000)

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