save project

diy1.py

-username = "python"    # 保存在服务器数据库中的用户账号（正确的账号）
-userpassword = "123456"    # 保存在服务器数据库中的用户密码（正确的密码）
-i=3
-while True:
-    i+=0
-    if i>=0
-        name=input("账号")
-        password=input("密码")
-    # 请用input()实现用户输入账号、密码的功能
-        if name == username and password == userpassword:
-            print("正确")
-            break
-        if name !=username :
-            print("错误,用户不存在")
-            print("还有",i,"次机会")
-            continue
-        if password !=userpassword :
-            i-1
-            print("错误,密码有误")
-            print("还有",i,"次机会")            
-            continue
-print("欢迎")
-
+import turtle
 
 
+pen =turtle.Pen()
+screen=turtle.Screen()
+screen.bgcolor("black")
+colors=["green","red","orange","yellow"]
+for i in range(1,300):
+    pen.pencolor(colors[i%4])
+    pen.forward(i)
+    pen.right(91)
+turtle.hideturtle()
+turtle.done()
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