save project

diy1.py

-# 利用write()帮助悟空给诺依回信吧~
-import turtle
-screen=turtle.Screen()
-screen.bgcolor("light blue")
-len=screen.textinput("100","100")
-lovesize=int(len)
-print(lovesize,float(len))
-pen=turtle.Pen()
-pen.write("你好",font=("Times",30,"normal"))
-pen.hideturtle()
-len=60
-pen.penup()
-pen.goto(100,100)
-pen.pendown()
-pen.pensize(5)
-pen.pencolor("red")
-pen.left(45)
-pen.forward(2*len)
-pen.circle(len,180)
-pen.right(90)
-pen.circle(len,180)
-pen.forward(2*len)
-turtle.done()
-PS C:\Users\HP\Documents\lesson3-5-
\ 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("登陆成功")
+        break
+    if name !=username:
+        print("用户名不存在！请重新输入")
+    else:
+        print("密码输入错误！请重新输入")
+print("欢迎来到贝尔编程")
+