在python 3中进行expat解析

Question

import xml.parsers.expat

def start_element(name, attrs):
    print('Start element:', name, attrs)

def end_element(name):
    print('End element:', name)

def character_data(data):
    print('Character data: %s' % data)

parser = xml.parsers.expat.ParserCreate()
parser.StartElementHandler = start_element
parser.EndElementHandler = end_element
parser.CharacterDataHandler = character_data
parser.ParseFile(open('sample.xml'))

上面的工作在python 2.6但不在python 3.0中 - 任何使它在python 3中工作的想法非常赞赏.我上ParseFile线的错误是TypeError: read() did not return a bytes object (type=str)

Answer 1

你需要以二进制文件打开该文件:

parser.ParseFile(open('sample.xml', 'rb'))

Answer 2

我在尝试将xmltodict模块与 Python 3一起使用时遇到了这个问题。在 Python 2.7 下我没有问题，但在 Python 3 下我遇到了同样的错误。解决方案与@SilentGhost 建议的相同：

import xmltodict

def convert(xml_file, xml_attribs=True):
    with open(xml_file, "rb") as f:    # notice the "rb" mode
        d = xmltodict.parse(f, xml_attribs=xml_attribs)
        return d