save project

diy2.py

-username = "python"
-userpassword = "123456"
-i=3
-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 and b == userpassword:
-            break
-            print("登录成功!")
-        if a!=username:
-            print("用户名错误!请重新输入")
-            print("还有"+str(i)+"次")
-            continue
-        if b!=userpassword:
-            print("密码错误!请重新输入")
-            print("还有+str(i)+次")
-    else:
-        print("登录锁定")
-        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)
+    pen.left(91)
+    distance+=1
+pen.hideturtle()
+turtle.done()
\ No newline at end of file