save project

diy2.py

-username = "python"
-userpassword = "123456"
+user_pass = {'python':'123456', 'python1':'234567', 'python2':"345678"}
+# 请用input()实现用户输入账号、密码的功能
 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!")
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+    u = input('用户名:').strip().rstrip()
+    p = input('密码:')
+    users = user_pass.keys()
+    if u not in users:
+        print('用户不存在')
+        continue
+    else:
+        if user_pass[u] != p:
+            print('密码错误')
+            continue
+        else:
+            break
+print(u,',登录成功!')    
+    
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