save project

diy2.py

-i=4
-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=i-1
-        if name == username and password == userpassword:
-            print("登录成功!")
-            break
-        if name!=username:
-            print("用户名错误,请重试")
-            print("你还有"+str(i)+"次机会")
-            continue
-        if password!=userpassword:
-            print("你还有"+str(i)+"次机会")
-            print("密码错误,请重试")
-    else:
-        print("你的账户已被锁定,请稍后再试")
-        exit()
-print("欢迎来到贝尔编程!")
\ No newline at end of file
+import turtle
+pen=turtle.Pen()
+distance=1
+for i in range(300):
+   pen.forward(distance)
+   distance+=1
+   pen.right(91)
+pen.hideturtle()
+turtle.done()