Python编程：Python2.7的MD5编码问题

测试环境 Python 2.7.5

1、直接做MD5

# -*- coding: utf-8 -*-

import hashlib

s = '20637332019-03-29已受理'
md5 = hashlib.md5(s).hexdigest()
# md5 = hashlib.md5(s.encode("utf-8")).hexdigest()
# UnicodeDecodeError

print(md5)
'a8027582770cfb7efc11f2abe75f9827'

2、引入新特性做MD5

# -*- coding: utf-8 -*-

from __future__ import unicode_literals, print_function
import hashlib

s = '20637332019-03-29已受理'
md5 = hashlib.md5(s.encode('utf-8')).hexdigest()
# md5 = hashlib.md5(s).hexdigest()
# UnicodeEncodeError

print(md5)
'a8027582770cfb7efc11f2abe75f9827'

3、reload之后做MD5

# -*- coding: utf-8 -*-

import hashlib
import sys

reload(sys)
sys.setdefaultencoding("utf-8")

s = '20637262019-03-29已受理'
md51 = hashlib.md5(s).hexdigest()
md52 = hashlib.md5(s.encode("utf-8")).hexdigest()
print(md51)
print(md52)
"""
a8027582770cfb7efc11f2abe75f9827
a8027582770cfb7efc11f2abe75f9827
"""

通过测试

方式直接做MD5编码后做md5直接做MD5a8027582770cfb7efc11f2abe75f9827UnicodeDecodeError引入新特性做MD5UnicodeEncodeErrora8027582770cfb7efc11f2abe75f9827reload之后做MD5a8027582770cfb7efc11f2abe75f9827a8027582770cfb7efc11f2abe75f9827

Python3之后做MD5必须编码

所以推荐使用 引入新特性做MD5 也就是编码之后在做MD5