import sys
input_name=input("input your name:")
f1=open("F:/测试资料/pythonlearn/day1/luckname.txt","r")
lines = f1.readlines()
for line in lines:
user= line.strip('\n')
if input_name==user:
print("账号已锁定...")
sys.exit()
f2=open("F:/测试资料/pythonlearn/day1/user.txt","r")
lines=f2.readlines()
for line in lines:
(user,pw)=line.strip('\n').split(',')
if input_name==user:
j=0
while j<3:
input_pw=input("input your password:")
if input_pw==pw:
print ("登录成功")
sys.exit()
else:
print("密码不正确")
j=j+1
else:
f1=open("F:/测试资料/pythonlearn/day1/luckname.txt","a")
f1.write(input_name + '\n')
print("账号已锁定")
sys.exit()
else:
continue
else:
print ("账号不存在")
f1.close() #关闭LOCK文件
f2.close()
1.while else ,for else,if else
2.关闭系统sys.exit()
3.读写文件