63 changes: 63 additions & 0 deletions 63 Python Projects/Timer/main.py Original file line numberDiff line numberDiff line change @@ -0,0 +1,63 @@ import tkinter as tkclass Application(tk.Frame):def __init__(sel
from tkinter import * import time class StopWatch(Frame): '''实现一个秒表部件''' msec=50 def __init__(self,parent=None,**kw): Frame.__init__(self,parent,kw) self._start = 0.0 self._elapsedtime =0.0 self._running = False self.timestr = StringVar() self.makeWidgets() def makeW...
Work through the definition of @timer line by line. Make sure you understand how it works. Don’t worry if you don’t get everything, though. Decorators are advanced beings. Try to sleep on it or make a drawing of the program flow. Note: The @timer decorator is great if you just ...
class Car: def __init__(self, make, model, year): self.make = make self.model = model self.year = year @property def brand(self): return self.make # 创建一个Car对象 my_car = Car('Toyota', 'Corolla', 2020) # 访问@property装饰器定义的属性 print(my_car.brand) # 输出:Toyota @...
Timer:与Thread类似,但要等待一段时间后才开始运行,是Thread的子类。 Lock :原锁,是一个同步原语,当它锁住时不归某个特定的线程所有,这个可以对全局变量互斥时使用。 RLock :可重入锁,使单线程可以再次获得已经获得的锁,即可以被相同的线程获得多次。
$ sudo make check $ sudo make install # 返回上级目录 $ popd 安装需要的 Python 库 你用Python 控制电子纸显示屏需要安装 Python 库RPi.GPIO,还需要使用python3-pil包来画图。显然,PIL 包已经不行了,但 Pillow 可以作为代替方案。我还没有为该项目测试过 Pillow ,但它可行: ...
SwiftUI Schedule Countdown Timer - Pause & Start I'm trying to make Clock(actual time) / Timer (CountDown) to my app.. I know my solution is kind of rough, but everything works kind of ok BUT. When I pause my Countdown and then start it again - In t... ...
def _make_gen(): for x in range(100): yield x ** 2 gen = _make_gen()生成器...
#event to make movement for snake based on arrow keys for anyEvent in game.event.get(): if anyEvent.type == game.QUIT: gameOver = True if anyEvent.type == game.KEYDOWN: if anyEvent.key == game.K_LEFT: arrow_key = 'left' lead_x_change = -pixel_size lead_y_change = 0 elif ...
Pygame 中用于描述颜色的对象。Color(name) -> Color Color(r, g, b, a) -> Color Color(rgbvalue) -> Color 方法& 属性 pygame.Color.r — 获取或设置 Color 对象的红色值 pygame.Color.g — 获取或设置 Color 对象的绿色值 pygame.Color.b — 获取或设置 Color 对象的蓝色值 ...