auto save

1.py

+from turtle import *
+from random import random
+import contextlib
+
+def draw_circle(r):
+    a, b, c = random(), random(), random()
+    #pencolor(a, b, c)
+    fillcolor(a, b, c)
+    begin_fill()
+    circle(r)
+    end_fill()
+
+def pen_skip(step):
+    penup()
+    forward(step)
+    pendown()
+
+speed(5)
+setup(width=800,height=600)
+screensize(600,400, "gray")
+long = 600
+high = 450
+left(180)
+pen_skip(250)
+left(90)
+pen_skip(200)
+left(90)
+high_start = 50
+high_step = 50
+long_start = 50
+long_step = 50
+for i in range(high_start,high,high_step):
+    for j in range(long_start,long,long_step):
+        if (i//high_step)%2 ==1:
+            if j == long-long_step:
+                draw_circle(long_step//2)
+                continue
+            draw_circle(long_step // 2)
+            pen_skip(long_step)
+        else:
+            if j == long-long_step:
+                draw_circle(-long_step // 2)
+                continue
+            draw_circle(-long_step // 2)
+            pen_skip(long_step)
+    if (i//50)%2 == 1:
+        left(90)
+        pen_skip(high_step)
+        left(90)
+    else:
+        right(90)
+        pen_skip(high_step)
+        right(90)
+exitonclick()

day4-2.py

-username = "python"
-userpassword = "123456"
-while True:
-    name = input("请输入用户名:")
-    password = input("请输入密码:")
-    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")
-    elif  password !=userpassword:
-        print("密码错误,请重新输入")
-    else:
-        print("账号、密码生日正确")
+# username = "python"
+# userpassword = "123456"
+# while True:
+#     name = input("请输入用户名:")
+#     password = input("请输入密码:")
+#     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")
+#     elif  password !=userpassword:
+#         print("密码错误,请重新输入")
+#     else:
+#         print("账号、密码生日正确")
     
     
-print("欢迎来到贝尔编程!")
+# print("欢迎来到贝尔编程!")
\ No newline at end of file
+