save project

123.py

-username="123"
-userpassword="12"
+username="1"
+userpassword="1"
+i=3 
 while True:
-    name=input("输入账号：")
-    password=input("输入密码：")
-    if username==name and userpassword==password:
-        print("登录成功！")
-        break    
-    if username!=name:
-        print("账户名错误，请重新输入！")
-        continue
-    if userpassword!=password:
-        print("密码错误，请重新输入！")
+    if i>0:
+        name=input("输入账号：")
+        password=input("输入密码：")
+        i=i-1
+        if username==name and userpassword==password:
+            print("登录成功！")
+            break    
+        if username!=name:
+            print("账户名错误，请重新输入！")
+            continue
+        if userpassword!=password:
+            print("密码错误，请重新输入！")
+    else:
+        print("byebye")
+    exit()
+print("欢迎")
         
-