save project

2.py

+i=3
+username = "python" 
+userpassword = "123456" 
+while True:
+    if i>0:
+        name = input("请输入用户名:")
+        password = input("请输入密码:")
+        i-=1
+        if name == username and password == userpassword:
+            print("登录成功!")        
+            break
+        elif name != username:
+            print("用户名不存在！，请从新输入！")
+            print("您还有"+str(i)+"次登入机会!")
+    else:
+        print("你的账号已被锁定！请带身份证来我司解锁!")    
+        exit()
+print("欢迎来到贝尔编程!")
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