Python：lxml格式化

Question

我需要创建一个xml文件。是否有可能获得以下格式？列表中的len通常较大并且总是不同。所以我不能使用if循环与列表长度的请求。

所需的格式：

<test> 
    <fanart> 
    <thumb preview="http://image.tmdb.org/t/p/w342/krkkgbtWHlMXVLbPGdIxzxKJERM.jpg">http://image.tmdb.org/t/p/original/krkkgbtWHlMXVLbPGdIxzxKJERM.jpg</thumb> 
    <thumb preview="http://image.tmdb.org/t/p/w342/izYCpovyAIKLI2i3gmhSKxlR8Pk.jpg">http://image.tmdb.org/t/p/original/izYCpovyAIKLI2i3gmhSKxlR8Pk.jpg</thumb> 
    <thumb preview="http://image.tmdb.org/t/p/w342/vmrnxaYx1xlG5jhuFUs51dd3VPA.jpg">http://image.tmdb.org/t/p/original/vmrnxaYx1xlG5jhuFUs51dd3VPA.jpg</thumb> 
    <thumb preview="http://image.tmdb.org/t/p/w342/pPFbXcONHBntJIAsEn8TaIPPCpZ.jpg">http://image.tmdb.org/t/p/original/pPFbXcONHBntJIAsEn8TaIPPCpZ.jpg</thumb> 
    </fanart> 
</test> 

代码：

import lxml.builder 

E = lxml.builder.ElementMaker() 
nfo = E.test() 

list = [('http://image.tmdb.org/t/p/w342/krkkgbtWHlMXVLbPGdIxzxKJERM.jpg','http://image.tmdb.org/t/p/original/krkkgbtWHlMXVLbPGdIxzxKJERM.jpg'), 
     ('http://image.tmdb.org/t/p/w342/izYCpovyAIKLI2i3gmhSKxlR8Pk.jpg','http://image.tmdb.org/t/p/original/izYCpovyAIKLI2i3gmhSKxlR8Pk.jpg'), 
     ('http://image.tmdb.org/t/p/w342/vmrnxaYx1xlG5jhuFUs51dd3VPA.jpg','http://image.tmdb.org/t/p/original/vmrnxaYx1xlG5jhuFUs51dd3VPA.jpg'), 
     ('http://image.tmdb.org/t/p/w342/pPFbXcONHBntJIAsEn8TaIPPCpZ.jpg','http://image.tmdb.org/t/p/original/pPFbXcONHBntJIAsEn8TaIPPCpZ.jpg')] 

for (link_thumb, link_orig) in list: 
    fanart = E.fanart(E.thumb(link_orig,preview=link_thumb)) 
    nfo.append(fanart) 


print lxml.etree.tostring(nfo, pretty_print=True) 

输出：

<test> 
    <fanart> 
    <thumb preview="http://image.tmdb.org/t/p/w342/krkkgbtWHlMXVLbPGdIxzxKJERM.jpg">http://image.tmdb.org/t/p/original/krkkgbtWHlMXVLbPGdIxzxKJERM.jpg</thumb> 
    </fanart> 
    <fanart> 
    <thumb preview="http://image.tmdb.org/t/p/w342/izYCpovyAIKLI2i3gmhSKxlR8Pk.jpg">http://image.tmdb.org/t/p/original/izYCpovyAIKLI2i3gmhSKxlR8Pk.jpg</thumb> 
    </fanart> 
    <fanart> 
    <thumb preview="http://image.tmdb.org/t/p/w342/vmrnxaYx1xlG5jhuFUs51dd3VPA.jpg">http://image.tmdb.org/t/p/original/vmrnxaYx1xlG5jhuFUs51dd3VPA.jpg</thumb> 
    </fanart> 
    <fanart> 
    <thumb preview="http://image.tmdb.org/t/p/w342/pPFbXcONHBntJIAsEn8TaIPPCpZ.jpg">http://image.tmdb.org/t/p/original/pPFbXcONHBntJIAsEn8TaIPPCpZ.jpg</thumb> 
    </fanart> 
</test> 

谢谢！

Answer 1

您附加fanart元素为每个image;改为制作1 fanart元素并将其附加到nfo;然后将每个图像附加到fanart元素中：

import lxml.builder 

E = lxml.builder.ElementMaker() 
nfo = E.test() 
fanart = E.fanart() 
nfo.append(fanart)  

items = [('http://image.tmdb.org/t/p/w342/krkkgbtWHlMXVLbPGdIxzxKJERM.jpg','http://image.tmdb.org/t/p/original/krkkgbtWHlMXVLbPGdIxzxKJERM.jpg'), 
     ('http://image.tmdb.org/t/p/w342/izYCpovyAIKLI2i3gmhSKxlR8Pk.jpg','http://image.tmdb.org/t/p/original/izYCpovyAIKLI2i3gmhSKxlR8Pk.jpg'), 
     ('http://image.tmdb.org/t/p/w342/vmrnxaYx1xlG5jhuFUs51dd3VPA.jpg','http://image.tmdb.org/t/p/original/vmrnxaYx1xlG5jhuFUs51dd3VPA.jpg'), 
     ('http://image.tmdb.org/t/p/w342/pPFbXcONHBntJIAsEn8TaIPPCpZ.jpg','http://image.tmdb.org/t/p/original/pPFbXcONHBntJIAsEn8TaIPPCpZ.jpg')] 

for (link_thumb, link_orig) in items: 
    fanart.append(E.thumb(link_orig,preview=link_thumb))  

print lxml.etree.tostring(nfo, pretty_print=True)