python2 中获取int最大值 import sys i = sys.maxint print i 但是在python3中,报错: AttributeError: module 'sys' has no attribute 'maxint' 看了官网文档后了解python3中没有maxint了,只有maxsize import sys i = sys.maxsize print(i) 官网说明文档:https://docs.python.org/3.1/whatsnew/3.0.html#i