我是 Python 新手，我在下面编写了这段代码。这只是一个简单的登录代码，可让您注册或登录。
现在我可以登录了。如您所见，我将用户名和密码放在变量中database。
在函数中register()，我试图以（用户名，密码）的形式将newusernameand添加newpassword到列表中，以便函数看到它。databaselogin()
import time
import sys
import getpass
database = [
("Test1", "123"),
("Test2", "000")
]
def login():
time.sleep(1)
print("Welcome. Please login.")
while True:
time.sleep(1)
username = input("Username: ")
password = getpass.getpass("Password: ")
time.sleep(1)
if (username, password) in database:
print("Welcome, " + username)
main()
else:
print("User not found. Try again.")
def logout():
time.sleep(1)
print("Logout?")
lgout = input(">>")
if lgout == ("yes") or lgout == ("Yes") or lgout == ("YES"):
time.sleep(1)
print("Logout successful")
main2()
elif lgout == ("no") or lgout == ("No") or lgout == ("NO"):
print("Logout unsuccessful")
main()
else:
print("Command not valid")
def main():
time.sleep(1)
print("Current commands: Logout")
while True:
command = input(">>")
if command == ("Logout"):
logout()
else:
print("Command not valid")
def main2():
time.sleep(1)
print("Hello, would you like to login, register or exit?")
while True:
command2 = input(">>")
if command2 == ("Login") or command2 == ("login") or command2 == ("LOGIN"):
login()
elif command2 == ("Register") or command2 == ("register") or command2 == ("REGISTER"):
register()
elif command2 == ("Exit") or command2 == ("exit") or command2 == ("EXIT"):
sys.exit()
else:
print("Command not valid")
def register():
print("Register your information below")
newusername = input("Username: ")
newpassword = getpass.getpass("Password: ")
print("Success! Please login!")
login()
main2()
可悲database["newusername"] = newpassword的是它不起作用，因为它不是字典。