save project

diy.py

+i = 0
+s = 0
+while True:
+    i+=1
+    s+=i
+    if i == 3:
+        break
+print(s)
\ No newline at end of file

画风车.py

+"""
+"""
+使用turtle模块画图
+每次移动都增加画笔移动的长度，并旋转91°，重复执行300次，查看效果
+"""
+import turtle
+
+pen = turtle.Pen()
+# 请创造师在下面接着创作
+d = 1
+while d < 500:
+    pen.forward(d)
+    pen.right(91)
+    d +=1
+
+# 隐藏画笔，保存画布
+pen.hideturtle()
+turtle.done()
\ No newline at end of file

登陆系统.py

-username = "python"
+import random
+import random
+from time import sleep   #导入sleep()函数
+i = 5
 username = "python"
 username = "python"
 userpassword = "123456"
 userpassword = "123456"
 while True:
 while True:
+    if i>0:
         name = input("请输入用户名:")
         name = input("请输入用户名:")
         password = input("请输入密码:")
         password = input("请输入密码:")
+        i-=1
         if name == username and password == userpassword:
         if name == username and password == userpassword:
             print("登录成功!")
             print("登录成功!")
             break
             break
@@ -10,4 +15,6 @@ while True:
             print("用户名不存在,请重新输入!")
             print("用户名不存在,请重新输入!")
         if password != userpassword:
         if password != userpassword:
             print("密码输入有误,请重新输入!")
             print("密码输入有误,请重新输入!")
-print("欢迎来到贝尔编程!")
+    else:
+        print("您的账户已被冻结，请联系工作人员解冻")
+        exit()