本文实例讲述了python开发之thread实现布朗运动的方法。分享给大家供大家参考，具体如下：
这里我将给大家介绍有关python中thread来实现布朗运动的一个例子
下面是运行效果：
代码部分：
# Brownian motion -- an example of a multi-threaded Tkinter program. from tkinter import * import random import threading import time import sys #画布大小 WIDTH = 400 HEIGHT = 300 SIGMA = 10 BUZZ = 2 RADIUS = 2 LAMBDA = 10 FILL = 'red' stop = 0 # Set when main loop exits def particle(canvas): r = RADIUS x = random.gauss(WIDTH/2.0, SIGMA) y = random.gauss(HEIGHT/2.0, SIGMA) p = canvas.create_oval(x-r, y-r, x+r, y+r, fill=FILL) while not stop: dx = random.gauss(0, BUZZ) dy = random.gauss(0, BUZZ) dt = random.expovariate(LAMBDA) try: canvas.move(p, dx, dy) except TclError: break time.sleep(dt) def main(): global stop root = Tk() canvas = Canvas(root, width=WIDTH, height=HEIGHT) canvas.pack(fill='both', expand=1) #粒子数目 np = 30 if sys.argv[1:]: np = int(sys.argv[1]) for i in range(np): t = threading.Thread(target=particle, args=(canvas,)) t.start() try: root.mainloop() finally: stop = 1 main()
希望本文所述对大家Python程序设计有所帮助。
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