save project

diy2.py

 username = "p"
 userpassword = "1"
+i=3
+
 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!")
-        break
-    if name !=username:
-        print('姓名错误')  
-        continue
-    if password != userpassword:    
-        print('密码错误')     
-        continue
+    if i>0:
+        
+        
+        name = input("请输入用户名:")
+        password = input("请输入密码:")
+        i-=1
+        print('你还有'+str(i)+'次机会')
+        if name == username and password == userpassword:
+            print("登录成功!")
+            break
+        if name !=username:
+            print('姓名错误')  
+            continue
+        if password != userpassword:    
+            print('密码错误')     
+            continue
     else:
-        print('密码不正确，请重新输入！')
+        print('wybj')
+        break