适合读取小文件

以二进制的方式一次读取文件（只适合读取小文件），然后计算相应 md5、sha1、sha256、sha512 值

md5

import hashlib

def md5(path):
    # hashlib.sha512()  or hashlib.md5()
    algorithm = hashlib.md5()
    with open(path, 'rb') as f:
        algorithm.update(f.read())

    return algorithm.hexdigest()



path = 'md5.py'
print(md5(path))

sha1

import hashlib

def sha1(path):
    # hashlib.sha512()  or hashlib.md5()
    algorithm = hashlib.sha1()  
    with open(path, 'rb') as f:
        algorithm.update(f.read())

    return algorithm.hexdigest()



path = 'sha1.py'
print(sha1(path))

sha256

import hashlib

def sha256(path):
    # hashlib.sha512()  or hashlib.md5()
    algorithm = hashlib.sha256()  
    with open(path, 'rb') as f:
        algorithm.update(f.read())

    return algorithm.hexdigest()



path = 'sha256.py'
print(sha256(path))

sha512

import hashlib

def sha512(path):
    # hashlib.sha512()  or hashlib.md5()
    algorithm = hashlib.sha512()  
    with open(path, 'rb') as f:
        algorithm.update(f.read())

    return algorithm.hexdigest()



path = 'sha512.py'
print(sha512(path))

参考：https://blog.csdn.net/TomorrowAndTuture/article/details/121356204