save project

diy2.py

+username = "dairy"
+userpassword = "5115"
+i=3
+while True:
+    if i>0:
+        name = input("请输入用户名:")
+        password = input("请输入密码:")
+        i=i-1
+        if name == username and password == userpassword:
+            print("登录成功!")
+            print("欢迎来到贝尔编程!")
+            break
+        else:
+            if name!=username:
+                print("用户名错误!请重新输入")
+                continue
+            if password!=userpassword:
+                print("密码错误!请重新输入")
+    else:
+        print("请1万年后登录")
+        break 
+