python3中hashlib模块的sha1加密

from hashlib import sha1
# 需要加密的字符串
pwd = "123"
# 创建sha1对象
s1 = sha1()
# 对s1进行更新
s1.update(pwd.encode())
# 加密处理
result = s1.hexdigest()
# 结果是40位字符串：'40bd001563085fc35165329ea1ff5c5ecbdbbeef'
print(result)