save project

diy2.py

+i=3
 u = "python"
 w = "123456"
 while True:
-    n = input("请输入用户名:")
-    p = input("请输入密码:")
-    if name == username and password == userpassword:
-        print("登录成功!")
-        break
-    if n != u:
-        print('用错')
-        continue
-    if p != w:
-        print('密错')    
-
-print("欢迎来到贝尔编程!")
+    if i>0:
+        n = input("请输入用户名:")
+        p = input("请输入密码:")
+        i-=1
+        if u == n and w == p:
+            print("登录成功!")
+            break
+        if n != u:
+            print('用错')
+            continue
+        if p != w:
+            print('密错')    
+    else:
+        exit()
+print("欢迎来到贝尔编程!")
\ No newline at end of file