django批量导入xml数据

@python_2_unicode_compatible
class SVNLog(models.Model):

  vision = models.IntegerField(verbose_name=u"修订版本", blank=False, null=False,)
  author = models.CharField(verbose_name=u"作者", max_length=60, blank=True, null=True)
  date = models.DateTimeField(verbose_name=u"修订时间",null=True )
  msg = models.TextField(verbose_name=u"注释消息", blank=False, null=False, default=u"")
  paths = models.TextField(verbose_name=u"影响的文件", blank=False, null=False, default=u"")
  created_time = models.DateTimeField(verbose_name=u"创建时间", auto_now_add=True, )
  update_time = models.DateTimeField(verbose_name=u"修改时间", auto_now=True, )

  class Meta:
    ordering = ['revision']

  def __str__(self):
    return u'r%s' % (self.revision or u"", )

@python_2_unicode_compatible
class ImportLogFile(models.Model):

  LogFile = models.FileField(upload_to='LogFile')
  FileName = models.CharField(max_length=50, verbose_name=u'文件名')

  class Meta:
    ordering = ['FileName']

  def __str__(self):
    return self.FileName

python manage.py makemigrations
python manage.py migrate

class ImportLogAdmin(admin.ModelAdmin):

  list_display = ('LogFile','FileName',)
  list_filter = ['FileName',]

  def save_model(self, request, obj, form, change):

    re = super(YDImportLogAdmin,self).save_model(request, obj, form, change)
    update_svn_log(self, request, obj, change)
    return re

<?xml version="1.0" encoding="UTF-8"?>
<log>
<logentry
  revision="2">
<author>qwert</author>
<date>2016-09-27T07:16:37.396449Z</date>
<paths>
<path
  action="A"
  prop-mods="false"
  text-mods="true"
  kind="file">/aaa/README
  </path>
</paths>
<msg>20160927 151630</msg>
</logentry>


<logentry
  revision="1">
<author>VisualSVN Server</author>
<date>2016-09-20T05:03:12.861315Z</date>
<paths>
<path
  action="A"
  prop-mods="false"
  text-mods="false"
  kind="dir">/branches</path>
<path
  action="A"
  prop-mods="false"
  text-mods="false"
  kind="dir">/tags</path>
<path
  action="A"
  prop-mods="false"
  text-mods="false"
  kind="dir">/trunk</path>
</paths>
<msg>hello word</msg>
</logentry>
</log>

r2 | qwer | 2016-09-27 15:16:37 +0800 (二, 27 9 2016) | 1 line
Changed paths:
  A /xxx/README

20160927 151630
------------------------------------------------------------------------
r1 | VisualSVN Server | 2016-09-20 13:03:12 +0800 (二, 20 9 2016) | 1 line
Changed paths:
  A /branches
  A /tags
  A /trunk

Initial structure.
from .models import SVNLog
import xmltodict
def update_svn_log(self, request, obj, change):

  headers = ['r','a','d','m','p']
  filepath = obj.LogFile.path
  xmlfile = xmltodict.parse(open(filepath, 'r'))
  xml_logentry = xml.get('log').get('logentry')
  info_list = []
  pathlist = []
  sql_insert_list = []
  sql_update_list = []
  for j in xml:
    data_dict = {}
    # get path
    paths = j.get('paths').get('path')
    if isinstance(paths,list):
      for path in paths:
        action = path.get('@action')
        pathtext = path.get('#text')
        pathtext = action + ' ' + pathtext
        pathlist.append(pathtext)
        
      _filelist = u'\n'.join(pathlist)
      _paths = u"Changed paths:\n {}".format(_filelist)
      print _paths
    else:
      _filelist = paths.get('@action') + ' ' + paths.get('#text')
      _paths = u"Changed paths:\n {}".format(_filelist)
      print _paths
    # get revision
    vision = j.get('@vision')
    # get auth
    author = j.get('author')
    #get date
    date = j.get('date')
    #get msg
    msg = j.get('msg')

    data_dict[headers[0]] = int(vision)
    data_dict[headers[1]] = author
    data_dict[headers[2]] = date
    data_dict[headers[3]] = msg
    data_dict[headers[4]] = _paths
    info_list.append(data_dict)

  _svnlog = SVNLog.objects.filter().order_by('-vision').first()
  _last_version = _svnlog.vision if _svnlog else 0

  for value in info_list:
    vision = value['r']
    author = value['a']
    date = value['d']
    msg = value['m']
    paths = value['p']
    print vision,author
    _svnlog = YDSVNLog.objects.filter().order_by('-revision').first()
    _last_version = _svnlog.revision if _svnlog else 0
    if vision > _last_version:
      sql_insert_list.append(SVNLog(revision=revision, author=author, date=date, msg = msg, paths = paths))
    else:
      sql_update_list.append(SVNLog(revision=revision, author=author, date=date, msg = msg, paths = paths))

  SVNLog.objects.bulk_create(sql_insert_list)
  SVNLog.objects.bulk_create(sql_update_list)

paths = j.get('paths').get('path')
if isinstance(paths,list):
  pass

revision = j.get('@vision')
# get auth
author = j.get('author')
#get date
date = j.get('date')
#get msg
msg = j.get('msg')