save project

1.py

-i=3 
-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("登录成功!")            
-           break        
-        if name != username:             
-         print("用户名错误!请重新输入")             
-         print("还有"+str(i)+"次机会")              
-         continue         
-        if password != userpassword:             
-            print("密码错误!请重新输入")            
-            print("还有"+str(i)+"次机会")     
-    else:        
-        print("账号已被锁定")        
-        exit()      
-print("欢迎来到贝尔编程!")
+import turtle
+pen=turtle.Pen()
+distance=1
+for i in range(300):
+    pen.forward(distance)
+    distance=distance+1
+    pen.right(91)
+pen.hideturtle()
+turtle.done()
\ No newline at end of file