s=['\n', 'magnet:?xt=urn:btih:060C0CE5CFAE29A48102280B88943880689859FC\n']
上面是目标代码，一个列表，中间有\n，我们现在将其去掉
s=[x.strip() for x in magnet_link]
运行会发现结果为
s=['', 'magnet:?xt=urn:btih:060C0CE5CFAE29A48102280B88943880689859FC']
离我们的要求越来越近了
s=[x.strip() for x in magnet_link if x.strip()!='']
好了，结果出来了
s=['magnet:?xt=urn:btih:060C0CE5CFAE29A48102280B88943880689859FC']