python 一个XML解析

Posted 2020-08-26

‘‘‘
Version:0.5
author;wujianqiang
date:2016/11/13
‘‘‘
import xml.etree.ElementTree as ET
from collections import Counter
from pprint import pprint
import json
from fnmatch import fnmatch
import os
class XMLParse(object):
    def __init__(self):
        self.data = {}
    def _open_file(self,filename):
        return ET.parse(filename).getroot()
    def _type_select(self,root, sybol=‘-‘):
        my_type = {}
        flag =False
        attrib_data = root.attrib
        if len(attrib_data) > 0:
            flag = True
            data = {sybol + key: value for key, value in attrib_data.items()}
            my_type.update(data)
        if len(root):
            myset = [child.tag for child in root]
            mydata = Counter(myset)
            for key, value in mydata.items():
                if value > 1:
                    my_type[key] = []
                elif value == 1:
                    my_type[key] = {}
            return my_type
        else:
            if flag:
                if root.text:
                    my_type[‘#text‘] = root.text
                return my_type
            else:
                return root.text
    def _par(self,root, data, sybol=‘-‘):
        utdata = self._type_select(root, sybol)
        if isinstance(data[root.tag], dict):
            data[root.tag] = utdata
        elif isinstance(data[root.tag], list):
            data[root.tag].append(utdata)
        if len(root) > 0:
            for item in root:
                self._par(item, utdata, sybol)
    def getdata_fromFile(self,filename, outfile=None,sybol=‘-‘):
        root = self._open_file(filename)
        self.data[root.tag] = {}
        if root.attrib:
            data = {sybol + key: value for key, value in root.attrib.items()}
            self.data[root.tag].update(data)
        self._par(root, self.data,sybol)
        if outfile:
            file = open(outfile,‘w‘)
            json.dump(self.data,file)
            file.close()
            return True
        else:
            return self.data
    def getdata_fromString(self, stringdata, outfile=None, sybol=‘-‘):
        root = ET.fromstring(stringdata)
        self.data[root.tag] = {}
        if root.attrib:
            data = {sybol + key: value for key, value in root.attrib.items()}
            self.data[root.tag].update(data)
        self._par(root, self.data, sybol)
        if outfile:
            file = open(outfile, ‘w‘)
            json.dump(self.data, file)
            file.close()
            return True
        else:
            return self.data
    def _create_sub_Element(self,parnent, data, tag=None, attrib=‘-‘, text=‘#text‘):
        if isinstance(data, dict):
            for key, value in data.items():
                if fnmatch(key, ‘%s*‘ % (attrib,)):
                    parnent.attrib.update({key[1:]: value})
                elif fnmatch(key, text):
                    parnent.text = value
                else:
                    if type(value) == str:
                        a = ET.SubElement(parnent, key)
                        a.text = value
                    elif isinstance(value, dict):
                        a = ET.SubElement(parnent, key)
                        self._create_sub_Element(a, value)
                    else:
                        self._create_sub_Element(parnent, value, tag=key)
        elif isinstance(data, list):
            for item in data:
                l = ET.SubElement(parnent, tag)
                self._create_sub_Element(l, item, tag)
        else:
            pass
    def _create_root_Element(self,data):
        root_key = data.keys()[0]
        root = ET.Element(root_key)
        etre = ET.ElementTree(root)
        return [root, data[root_key], etre]
    def _create_Element(self, data, attr=‘-‘, text=‘#text‘):
        root, mydata, tree = self._create_root_Element(data)
        self._create_sub_Element(root, mydata, attrib=attr, text=text)
        return tree
    def create_xml(self,data,outfile=None):
        if data:
            root = self._create_Element(data)
            filename = outfile if outfile else ‘.temp‘
            root.write(filename)
            if not outfile:
                f = open(filename)
                data = f.readlines()[0]
                f.close()
os.remove(filename)
                return data
        else:
            return None
if __name__ == ‘__main__‘:
    xdata = XMLParse()
    dat = {‘data‘: {‘-fictional‘: ‘http://characters.example.com‘,
                    ‘country‘: [{‘-name‘: ‘Liechtenstein‘,
                                 ‘gdppc‘: ‘141100‘,
                                 ‘neighbor‘: [{‘-direction‘: ‘E‘,
                                               ‘-name‘: ‘Austria‘},
                                              {‘-direction‘: ‘W‘,
                                               ‘-name‘: ‘Switzerland‘}],
                                 ‘rank‘: ‘1‘,
                                 ‘year‘: ‘2008‘},
                                {‘-name‘: ‘dfd‘,
                                 ‘gdppc‘: ‘14100‘,
                                 ‘neighbor‘: {‘-direction‘: ‘E‘, ‘-name‘: ‘wuul‘},
                                 ‘rank‘: ‘3‘,
                                 ‘year‘: {‘#text‘: ‘208‘, ‘-d‘: ‘sd‘}}]}}
    # pprint(xdata.getdata_fromFile(‘myxml2.xml‘,sybol=‘-‘))
    pprint(xdata.create_xml(dat))

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