如何讀取網上檔案的大小

我想使用python（urllib或urllib2）從網站下載文件下載時我想顯示下載的百分比。如何讀取網上檔案的大小

#!usr/bin/env python 
#-*- coding: latin1 -*- 

import urllib 

url = 'http://ww1.microchip.com/downloads/en/DeviceDoc/pk2cmdv1-20Linux2-6.tar.gz' 
urllib.urlretrieve(url, "pickit.tar.gz")

我該如何實現？

來源

2013-02-05 marlonjke

下面的代碼應該工作：

def download(url, local_file): 
    def progress(blocks_read, block_size, total_size): 
     percent = min(int(blocks_read * block_size * 100/total_size), 100) 
     sys.stdout.write("\rdownloading {}: {:2}%".format(local_file, percent)) 
     if percent == 100: 
      sys.stdout.write('\n') 
     sys.stdout.flush() 

    urllib.urlretrieve(url, local_file, reporthook=progress) 


# call download function 
download("http://ww1.microchip.com/downloads/en/DeviceDoc/pk2cmdv1-20Linux2-6.tar.gz", 
     "pickit.tar.gz")

來源

2013-02-05 14:39:39

是的！它工作完美 – marlonjke