save project

diy2.py

-for i in range(1,10):  # 行
-    for j in range(1,i+1):   # 列
-        print(j,"*",i,"=",(j*i),end="  ")# 使用变量i和j，代替乘法算式里面的元素，打印出单个乘法算式
-    print()
\ No newline at end of file
+username = "python"
+userpassword = "123456"
+while True:
+    name = input("请输入用户名:")
+    password = input("请输入密码:")
+    if name == username and password == userpassword:
+        print("登录成功!") 
+        break
+    print("用户名和密码错误!请重新输入")
+print("欢迎来到贝尔编程!")
\ No newline at end of file