save project

bug.py

-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-=1 
-        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！")
-            continue
-        if password != userpassword 
-            print("密码输入有误，请重新输入！")  
-    else:        
-    print("你的账户已被锁定，请一个小时之后再来")
-    exit()
-print("欢迎来到贝尔编程")    
\ No newline at end of file
+import turtle
+
+
+pen = turtle.Pen()
+colors=("red,orong,yellow,green")
+for i in range(1,300):
+    pen.forward(i)
+    pen.pencolor(colors[i%4])
+turtle.done()
\ No newline at end of file