save project

diy2.py

+'''username = "python"
+userpassword = "123456"
+while True:
+    name = input("请输入用户名:")
+    password = input("请输入密码:")
+    if name == username and password == userpassword:
+        print("登录成功!")
+    print("用户名和密码错误!请重新输入")
+print("欢迎来到贝尔编程!")'''
+while True:
+    a=input("账号")
+    b=int(input("密码"))
+    if a=="python" and b==123456:
+        print("欢迎")
+        break
+    if a!="python":
+        print("账号错误")
+    if b!=123456:
+        print("密码错误")
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