password.py

import hashlib
class User(object):
    def __init__(self):
        self.password = ""
        
    def set_password(self, raw_password):
        hash = "pass" # randomly generate this
        m = hashlib.sha1(raw_password + hash)
        self.password = "%s$%s" % (m.hexdigest(), hash)
        
    def check_password(self, raw_password):
        if not "$" in self.password:
            return False
        
        pass_, hash = self.password.split("$")
        m = hashlib.sha1(raw_password + hash)
        return m.hexdigest() == pass_
    
u = User()
u.set_password("ohai")
print u.check_password("ohai")
print u.check_password("ohai2")