python 读写XML
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参考
http://yshblog.com/blog/151
# coding:utf-8 import os import sys from lxml import etree sys.path.append(os.path.dirname(os.path.dirname(__file__))) from abbr_extractor.pgconnect import PgConnect from common_tool.common_utils import get_latest_database_name, region_version from db_options import get_all_host_options, get_all_database, select_u_turn_info def collect_all_u_turn_info(): host_option_list = get_all_host_options() # get all database name database_host_dic = {} database_name_list = [] for host_option in host_option_list: pg_conn = PgConnect(host_option) if pg_conn.init_db(): host_database_list = get_all_database(pg_conn) database_name_list += host_database_list for name in host_database_list: database_host_dic[name] = host_option # get the latest database latest_name_list = get_latest_database_name(database_name_list) print latest_name_list # sql uturn u_turn_info_list_all = [] for database_name in latest_name_list: region, version = region_version(database_name) host_option = database_host_dic.get(database_name) host_option.dbname = database_name pg_conn = PgConnect(host_option) if pg_conn.init_db(): u_turn_info_list = select_u_turn_info(pg_conn) for u_turn_info in u_turn_info_list: setattr(u_turn_info, "region", region) u_turn_info_list_all += u_turn_info_list return u_turn_info_list_all def save_u_turn_to_xml(u_turn_info_list, save_xml_filename): root = etree.Element(‘u-turn_config‘, nsmap={"xmlns": ‘http://www.w3.org/2001/XMLSchema-instance‘}) for u_turn in u_turn_info_list: record_node = etree.Element(‘record‘) root.append(record_node) admin_place_id_node = etree.Element(‘admin_place_id‘) record_node.append(admin_place_id_node) admin_place_id_node.text = "%s" % u_turn.admin_place_id admin_type_node = etree.Element(‘admin_type‘) record_node.append(admin_type_node) admin_type_node.text = "%s" % u_turn.admin_type admin_name_node = etree.Element("admin_name") record_node.append(admin_name_node) if isinstance(u_turn.admin_name, str): u_turn.admin_name = unicode(u_turn.admin_name, ‘utf-8‘) admin_name_node.text = u_turn.admin_name country_node = etree.Element("country") record_node.append(country_node) country_node.text = u_turn.country region_node = etree.Element("region") record_node.append(region_node) region_node.text = u_turn.region.lower() tree = etree.ElementTree(root) tree.write(save_xml_filename, pretty_print=True, xml_declaration=True, encoding=‘utf-8‘) print "write content to [%s] finish." % save_xml_filename def read_u_turn_xml(xml_file_path): xml = etree.parse(xml_file_path) root = xml.getroot() u_turn_info_list = [] for recode_node in root.getchildren(): from db_options import Options u_turn_info = Options() for tag_node in recode_node.getchildren(): tag_name = tag_node.tag tag_text = tag_node.text setattr(u_turn_info, tag_name, tag_text) u_turn_info_list.append(u_turn_info) return u_turn_info_list if __name__ == ‘__main__‘: u_turn_list = collect_all_u_turn_info() save_u_turn_to_xml(u_turn_list, ‘uturn_auto.xml‘) # u_turn_list = read_u_turn_xml(‘uturn.xml‘) # u_turn_list.sort(key=lambda d: d.admin_place_id) # save_u_turn_to_xml(u_turn_list, ‘uturn_sort.xml‘)
遇到的问题有:
写入时候的编码问题,将str类型转换为 unicode类型即可。
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