auto save

1.py

+import turtle
+a=int(turtle.textinput("提示","输入大小："))
+turtle.color("red")
+turtle.begin_fill()
+turtle.left(45)
+turtle.forward(2*a)
+turtle.circle(a,180)
+turtle.right(90)
+turtle.circle(a,180)
+turtle.forward(2*a)
+turtle.end_fill()
+turtle.bgcolor("black")
+turtle.penup()
+turtle.goto(100,-100)
+turtle.write("你好！",font=("黑体",40,"bold"))
+turtle.hideturtle()
+turtle.done()

2.py

+import random
+a=input("输入拳：")
+b=["石头","剪刀","布"]
+computer=random.choice(b)
+print(computer)
+if a in b:
+    if a==computer:
+        print("平局")
+    elif a=="石头" and computer=="剪刀" or a=="剪刀" and computer=="布" \
+        or a=="布" and computer=="石头":
+        print("我胜了！")
+    else:
+        print("我输了！")
+else:
+    print("输入错误！")
\ No newline at end of file

3.py

+n,m=map(int,input().split())
+wi=[-1]
+vi=[-1]
+for i in range(n):
+    a,b=map(int,input().split())
+    wi.append(a)
+    vi.append(b)
+dp=[[0 for i in range(m+1)] for j in range(n+1)]
+for i in range(1,n+1):
+    for j in range(1,m+1):
+        if j<wi[i]:
+            dp[i][j]=dp[i-1][j]
+        else:
+            dp[i][j]=max(dp[i-1][j],dp[i-1][j-wi[i]]+vi[i])
+

my_app.py

 import tkinter
 
 def login_to_reg():    # 登录界面转注册界面
-    pass
+    app_login.root.destroy()
+    global app_register
+    app_register=My_register()
+    app_register.show()
 
 def reg_to_login():   # 注册界面转登录界面
-    pass
+    app_login.root.destroy()
+    global app_register
+    app_register=My_register()
+    app_register.show()
 
 def register():     # 注册验证
     pass