How to use python's hashlib module

Encrypt a plaintext with a hash algorithm to obtain an irreversible hash value

import  hashlib
hm =hashlib.md5("sb".encode("utf8"))#对"sb"进行hash,如果不encode会报错
hm.update("admin".encode("utf8"))#对hash值加盐
print(hm.hexdigest())
print("==============一种效果====================")
hm =hashlib.md5()
hm.update("sb".encode("utf8"))
hm.update("admin".encode("utf8"))
print(hm.hexdigest())

ps: Add salt to prevent decryption by traversing the database!