最基本的抓取网页内容的代码实现：

#!/usr/bin/env python from urllib import urlretrieve def firstNonBlank(lines): for eachLine in lines: if not eachLine.strip(): continue else: return eachLine def firstLast(webpage): f = open(webpage) lines = f.readlines() f.close() print firstNonBlank(lines), lines.reverse() print firstNonBlank(lines), def download(url='http:///pics/blank.gif gif ... '''