def login(self):
 raise Exception("你没有实现login?法()")
class Normal(Base):
 def login(self):
 	pass
class Member(Base):
 	def denglu(self):
 		pass
class Admin(Base):
 def login(self):
 	pass
 # 项目经理写的总入口
def login(obj):
 print("准备启动程序.......")
    obj.login()
 print("进入主程序.......")
n = Normal()
m = Member()
a = Admin()
login(n)
login(m) # 报错. 
login(a)

from abc import ABCMeta, abstractmethod
class Base(metaclass=ABCMeta):
  @abstractmethod
  def login(self):
  pass
class Normal(Base):
  def loin(self):
  pass
class Member(Base):
 def denglu(self): # 这个就没用了
 pass
 def login(self): # 子类对父类进行实现
 pass
class Admin(Base):
 def login(self):
 pass  
def login(obj):
 print("准备进入程序.......")
 obj.login()
 print("进入主程序.......")
n = Normal()
m = Member()
a = Admin()
login(n)
login(m)
login(a) 

def num():
    return a/b
rt = num(2,0)
print(rt)    #  直接报错

def num():
    return a/b
try:
    rt = num(2,0)
    print(rt)
except Exception as e:
    print("除数不能是0")

class GenderError(Exception):
    pass
class Person:
    def __init__(self, name, gender):
        self.name = name
        self.gender = gender
def nan_zao_tang_xi_zao(person):
    if person.gender != "男":
        raise GenderError("性别不对. 这里是男澡堂子")	
p1 = Person("alex", "男")
p2 = Person("eggon", "蛋")
# nan_zao_tang_xi_zao(p1)
# nan_zao_tang_xi_zao(p2) # 报错. 会抛出一个异常: GenderError
# 处理异常
try:
    nan_zao_tang_xi_zao(p1)
    nan_zao_tang_xi_zao(p2)
except GenderError as e:
    print(e) # 性别不对, 这?是男澡堂?
except Exception as e:
    print("反正报错了")

import hashlib
obj = hashlib.md5()
obj.update("alex".encode("utf-8")) # 加密的必须是字节
miwen = obj.hexdigest()
print(miwen) # 534b44a19bf18d20b71ecc4eb77c572f

import hashlib
obj = hashlib.md5(b"fjlksajflkjasfsalwer123dfskjf") # 加入这些就安全了
obj.update("alex".encode("utf-8")) # 加密的必须是字节
miwen = obj.hexdigest()
print(miwen) # 99fca4b872fa901aac30c3e952ca786d

import hashlib
def my_md5(s):
    obj = hashlib.md5(b"fjlksajflkjasfsalwer123dfskjf")
    obj.update(s.encode("utf-8")) # 加密的必须是字节
    miwen = obj.hexdigest()
    return miwen
username = input("请输入用户名:")
password = input("请输入密码:")	
if username == "wusir" and my_md5(password) =="99fca4b872fa901aac30c3e952ca786d":
    print("成功")
else:
    print("失败")

logging.basicConfig(filename=‘x1.txt‘,
 format=‘%(asctime)s - %(name)s - %(levelname)s -%
(module)s: %(message)s‘,
 datefmt=‘%Y-%m-%d %H:%M:%S‘,
level=0) # 当前配置表示 10以上的分数会被写入文件
logging.critical("我是critical") # 50分. 最贵的
logging.error("我是error") # 40分
logging.warning("我是警告") # 警告 30
logging.info("我是基本信息") # 20
logging.debug("我是调试") # 10
logging.log(2, "我是自定义") # 自定义. 看着给分