【python路上小记】计算文件和字符串的md5值

小记】计算文件和字符串的md5值"/>

【python路上小记】计算文件和字符串的md5值

计算文件MD5

1、以二进制方式rb打开：

import hashlib
filepath = '/user/jerry.zip'  # 或者 rar，txt，json
def file_md5(filepath):try:with open(filepath, 'rb') as fb:contents = fb.read()file_md5 = hashlib.md5(contents).hexdigest()except Exception as e:print(e)return Noneelse:return file_md5

2、如果文件是txt等，可以以文本方式打开，计算出来的结果和rb是不一样的

import hashlib
filepath = '/user/jerry.txt'  # 或者 rar，txt，json
def file_md5(filepath):try:with open(filepath, 'r', encoding='utf8') as fb:text = fb.read()contents = text.encode(encoding="utf8")file_md5 = hashlib.md5(contents).hexdigest()except Exception as e:print(e)return Noneelse:return file_md5

计算字符串MD5

1、先encode再计算，既和以文本方式打开计算出来的结果一样

import hashlib
str = 'abcdegf' 
def file_md5(str):try:contents = str.encode(encoding="utf8")str_md5 = hashlib.md5(contents).hexdigest()except Exception as e:print(e)return Noneelse:return str_md5

2、其实都一样

import hashlib
str = 'abcdegf' 
def file_md5(str):try:contents = hashlib.md5()contents.update(str.encode("utf8"))str_md5 = contents.hexdigest()except Exception as e:print(e)return Noneelse:return str_md5