save project

bug.py

+i=3
 username="python"
 username="python"
 userpassword="123456"
 userpassword="123456"
 while True:
 while True:
-    name=input("请输入用户名")
-    password=input("请输入密码")
-    if name==username and name==userpassword:
-        print("登录成功")
-        break
-    if username!=name:
-        print("再见,用户名大错特错")
-        continue
-    if password!=userpassword:
-        print("再见,密码大错特错")
+    if i>0:
+        name=input("请输入用户名")
+        password=input("请输入密码")
+        i+=1
+        if name==username and name==userpassword:
+            print("登录成功")
+            break
+        if: username!=name
+            print("再见,用户名大错特错")
+            continue
+        if: password!=userpassword
+            print("再见,密码大错特错")
+    else:
+        print("永远在这里吧")
+        exit()
 print("欢迎来到贝尔编程")    
 print("欢迎来到贝尔编程")