On Jan 31, 5:23 pm, "Frank Potter" <[EMAIL PROTECTED]> wrote: > I want to find a multithreaded downloading lib in python, > can someone recommend one for me, please? > Thanks~
Why do you want to use threads for that? Twisted is the obvious solution for your problem, but you may use any asynchronous framework, as for instance the good ol Tkinter: """ Example of asynchronous programming with Tkinter. Download 10 times the same URL. """ import sys, urllib, itertools, Tkinter URL = 'http://docs.python.org/dev/lib/module-urllib.html' class Downloader(object): chunk = 1024 def __init__(self, urls, frame): self.urls = urls self.downloads = [self.download(i) for i in range(len(urls))] self.tkvars = [] self.tklabels = [] for url in urls: var = Tkinter.StringVar(frame) lbl = Tkinter.Label(frame, textvar=var) lbl.pack() self.tkvars.append(var) self.tklabels.append(lbl) frame.pack() def download(self, i): src = urllib.urlopen(self.urls[i]) size = int(src.info()['Content-Length']) for block in itertools.count(): chunk = src.read(self.chunk) if not chunk: break percent = block * self.chunk * 100/size msg = '%s: downloaded %2d%% of %s K' % ( self.urls[i], percent, size/1024) self.tkvars[i].set(msg) yield None self.tkvars[i].set('Downloaded %s' % self.urls[i]) if __name__ == '__main__': root = Tkinter.Tk() frame = Tkinter.Frame(root) downloader = Downloader([URL] * 10, frame) def next(cycle): try: cycle.next().next() except StopIteration: pass root.after(50, next, cycle) root.after(0, next, itertools.cycle(downloader.downloads)) root.mainloop() Michele Simionato -- http://mail.python.org/mailman/listinfo/python-list
