#include "libxml/xmlversion.h"compilation terminated.error: command 'x86_64-linux-gnu-gcc' failed with exit status 1----------------------------------------Cleaning up... Removing temporary dir /tmp/pip_build_root...Command /usr/bin/python -c "import setuptools, tokenize;__file__='/tmp/pip_build_root/lxml/setup.py';exec(compile(getattr(tokenize, 'open', open)(__file__).read().replace('/r/n', '/n'), __file__, 'exec'))" install --record /tmp/pip-O4cIn6-record/install-record.txt --single-version-externally-managed --compile failed with error code 1 in /tmp/pip_build_root/lxmlException information:Traceback (most recent call last): File "/usr/lib/python2.7/dist-packages/pip/basecommand.py", line 122, in main  status = self.run(options, args) File "/usr/lib/python2.7/dist-packages/pip/commands/install.py", line 283, in run  requirement_set.install(install_options, global_options, root=options.root_path) File "/usr/lib/python2.7/dist-packages/pip/req.py", line 1435, in install  requirement.install(install_options, global_options, *args, **kwargs) File "/usr/lib/python2.7/dist-packages/pip/req.py", line 706, in install  cwd=self.source_dir, filter_stdout=self._filter_install, show_stdout=False) File "/usr/lib/python2.7/dist-packages/pip/util.py", line 697, in call_subprocess  % (command_desc, proc.returncode, cwd))InstallationError: Command /usr/bin/python -c "import setuptools, tokenize;__file__='/tmp/pip_build_root/lxml/setup.py';exec(compile(getattr(tokenize, 'open', open)(__file__).read().replace('/r/n', '/n'), __file__, 'exec'))" install --record /tmp/pip-O4cIn6-record/install-record.txt --single-version-externally-managed --compile failed with error code 1 in /tmp/pip_build_root/lxml

sudo apt-get install libxml2-dev libxslt1-dev

#!/usr/bin/env python# -*- coding:utf-8 -*-import ioimport refrom lxml import etreedef generate_xml(filename, url_list):  """Generate a new xml file use url_list"""  root = etree.Element('urlset',             xmlns="http://www.sitemaps.org/schemas/sitemap/0.9")  for each in url_list:    url = etree.Element('url')    loc = etree.Element('loc')    loc.text = each    url.append(loc)    root.append(url)  header = u'<?xml version="1.0" encoding="UTF-8"?>/n'  s = etree.tostring(root, encoding='utf-8', pretty_print=True)  with io.open(filename, 'w', encoding='utf-8') as f:    f.write(unicode(header+s))def update_xml(filename, url_list):  """Add new url_list to origin xml file."""  f = open(filename, 'r')  lines = [i.strip() for i in f.readlines()]  f.close()  old_url_list = []  for each_line in lines:    d = re.findall('<loc>(http:////.+)<//loc>', each_line)    old_url_list += d  url_list += old_url_list  generate_xml(filename, url_list)def generatr_xml_index(filename, sitemap_list, lastmod_list):  """Generate sitemap index xml file."""  root = etree.Element('sitemapindex',             xmlns="http://www.sitemaps.org/schemas/sitemap/0.9")  for each_sitemap, each_lastmod in zip(sitemap_list, lastmod_list):    sitemap = etree.Element('sitemap')    loc = etree.Element('loc')    loc.text = each_sitemap    lastmod = etree.Element('lastmod')    lastmod.text = each_lastmod    sitemap.append(loc)    sitemap.append(lastmod)    root.append(sitemap)  header = u'<?xml version="1.0" encoding="UTF-8"?>/n'  s = etree.tostring(root, encoding='utf-8', pretty_print=True)  with io.open(filename, 'w', encoding='utf-8') as f:    f.write(unicode(header+s))if __name__ == '__main__':  urls = ['http://www.baidu.com'] * 10  mods = ['2004-10-01T18:23:17+00:00'] * 10  generatr_xml_index('index.xml', urls, mods)

<?xml version="1.0" encoding="UTF-8"?><urlset xmlns="http://www.sitemaps.org/schemas/sitemap/0.9"> <url>  <loc>http://www.example.com/foo.html</loc> </url></urlset>

<?xml version="1.0" encoding="UTF-8"?>  <sitemapindex xmlns="http://www.sitemaps.org/schemas/sitemap/0.9">  <sitemap>   <loc>http://www.example.com/sitemap1.xml.gz</loc>   <lastmod>2004-10-01T18:23:17+00:00</lastmod>  </sitemap>  <sitemap>   <loc>http://www.example.com/sitemap2.xml.gz</loc>   <lastmod>2005-01-01</lastmod>  </sitemap>  </sitemapindex>

def get_lastmod_time(filename):  time_stamp = os.path.getmtime(filename)  t = time.localtime(time_stamp)  # return time.strftime('%Y-%m-%dT%H:%M:%S+08:00', t)  return time.strftime('%Y-%m-%dT%H:%M:%SZ', t)

def generate_xml(filename, url_list):  with gzip.open(filename,"w") as f:    f.write("""<?xml version="1.0" encoding="utf-8"?><urlset xmlns="http://www.sitemaps.org/schemas/sitemap/0.9">/n""")    for i in url_list:      f.write("""<url><loc>%s</loc></url>/n"""%i)    f.write("""</urlset>""")def append_xml(filename, url_list):  with gzip.open(filename, 'r') as f:    for each_line in f:      d = re.findall('<loc>(http:////.+)<//loc>', each_line)      url_list.extend(d)    generate_xml(filename, set(url_list))def modify_time(filename):  time_stamp = os.path.getmtime(filename)  t = time.localtime(time_stamp)  return time.strftime('%Y-%m-%dT%H:%M:%S:%SZ', t)def new_xml(filename, url_list):  generate_xml(filename, url_list)  root = dirname(filename)  with open(join(dirname(root), "sitemap.xml"),"w") as f:    f.write('<?xml version="1.0" encoding="utf-8"?>/n<sitemapindex xmlns="http://www.sitemaps.org/schemas/sitemap/0.9">/n')    for i in glob.glob(join(root,"*.xml.gz")):      lastmod = modify_time(i)      i = i[len(CONFIG.SITEMAP_PATH):]      f.write("<sitemap>/n<loc>http:/%s</loc>/n"%i)      f.write("<lastmod>%s</lastmod>/n</sitemap>/n"%lastmod)    f.write('</sitemapindex>')