# 内置方法 # dic = {'k':'v'} # class Foo: # def __init__(self,name,age,sex): # self.name = name # self.age = age # self.sex = sex # # def __getitem__(self, item): # if hasattr(self,item): # return self.__dict__[item] # # def __setitem__(self, key, value): # self.__dict__[key] = value # # def __delitem__(self, key): # del self.__dict__[key] # # f = Foo('wjj',38,'男') # print(f['name']) # f['hobby'] = '男' # print(f.hobby,f['hobby']) # del f.hobby # del f['hobby'] # print(f.__dict__) # __new__ 构造方法:创建一个对象 # class A: # def __init__(self): # self.x = 1 # print('in init.') # # def __new__(cls, *args, **kwargs): # print('in new') # return object.__new__(A) # a1 = A() # a2 = A() # a3 = A() # print(a1) # print(a2) # print(a3) # print(a1.x) #单例模式 # class A: # __instance = False # # def __init__(self,name,age): # self.name = name # self.age = age # def __new__(cls, *args, **kwargs): # if cls.__instance: # return cls.__instance # cls.__instance = object.__new__(cls) # return cls.__instance # wjj = A('wjj',38) # wjj.cloth = '小花袄' # wjq = A('wjq',11) # print(wjq) # print(wjq.__dict__) # print(wjj) # __eq__方法 # class A: # def __init__(self,name): # self.name = name # # def __eq__(self, other): # if self.__dict__ == other.__dict__: # return True # else: # return False # obj1 = A("egg") # obj2 = A("egg") # print(obj1 == obj2) #hash()方法 # class A: # def __init__(self,name,sex): # self.name= name # self.sex = sex # def __hash__(self): # return hash(self.name + self.sex) # a = A('egon','男') # b = A('egv','女') # print(hash(a)) # print(hash(b)) #hashlib模块 # import hashlib # md5 = hashlib.md5() # md5.update(b'15254') # print(md5.hexdigest()) # md5 = hashlib.md5(bytes('盐',encoding='utf-8')) # print(md5.hexdigest()) #简单登陆验证 import hashlib user = input('username:') pwd = input('pwd:') with open('userinfo') as f: for line in f: use,passwd,role = line.split('|') md5 = hashlib.md5()#可在这里加盐 md5.update(bytes(pwd,encoding = 'utf-8')) md5_pwd = md5.hexdigest() if use == user and md5_pwd == passwd: print('登陆成功')
day28 hashlib
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转载自www.cnblogs.com/wujunjie-sir/p/9281106.html
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