python根据url地址下载小文件的实例

#########start根据url地址下载小文件############
def download_little_file(from_url,to_path):
 conn = urllib.urlopen(from_url)
 f = open(to_path,'wb')
 f.write(conn.read())
 f.close()
#########end根据url地址下载小文件############