save project

diy2.py

+i=5
+username = "1"
+userpassword = "2"
+while True:
+    if i>0:
+        a = input("请输入用户名:")
+        b = input("请输入密码:")
+        i-=1
+        if a == username :
+            if b == userpassword:
+                print("登录成功!")
+                break
+            else:    
+                print("密码错误!请重新输入") 
+                print("您还有"+str(i)+"次")           
+        else:    
+            print("用户名错误 请重新输入")
+            print("您还有"+str(i)+"次")
+    else:
+        print("用户冻结")
+        exit()
+print("欢迎来到贝尔编程!")
\ No newline at end of file