save project

dily.py

 username = 'python'
 username = 'python'
 userpassword = '123456'
 userpassword = '123456'
-
-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！")
+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！")
\ No newline at end of file
+        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

jj.py

-import turtle
-screen=turtle.Screen()
-screen.bgcolor("pink")
-screen.textnput("提示框","你想要多大的爱心呀")
-abc=int(len)
-pen=turtle.Pen()
-pen.goto(100,-100)
-pen.write("你好\nSB",font=("Times",30,"normal"))
-pen.hideturtle()
-pen1=turtle.Pen()
-pen1.left(45)
+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
-pen1.forward(100)
-pen1.circle(50,180)
-pen1.right(90)
-pen1.left(45)
-pen1.forward(100)
-pen1.circle(50,180)
-pen1.right(90)
-turtle.done()
\ No newline at end of file