Question

似乎vehicles.write(cars_file)和vehicles = cars_Etree.parse(cars_file)的文件名出现问题：

import argparse
import xml.etree.ElementTree as cars_Etree

# elementTree not reading xml file properly

if __name__ == '__main__':

    parser = argparse.ArgumentParser()

    parser.add_argument(
        dest='file_name',
        action='store',
        help='File name',
        metavar='FILE'
    )
    parser.add_argument(
        'car_make', help='car name')

    args = parser.parse_args()

    with open(args.file_name, 'r') as cars_file:
        vehicles = cars_Etree.parse(cars_file)
        cars = vehicles.getroot()

        for make in cars.findall(args.car_make):
            name = make.get('name')
            if name != args.car_make:
                cars.remove(make)

        with open(args.file_name, 'w') as cars_file:
            vehicles.write(cars_file)

错误：

Traceback (most recent call last):
  File "/Users/benbitdiddle/PycharmProjects/VehicleFilter/FilterTest.py", line 23, in <module>
    vehicles = cars_Etree.parse(cars_file)
  File "/Applications/anaconda/lib/python3.5/xml/etree/ElementTree.py", line 1184, in parse
    tree.parse(source, parser)
  File "/Applications/anaconda/lib/python3.5/xml/etree/ElementTree.py", line 596, in parse
    self._root = parser._parse_whole(source)
xml.etree.ElementTree.ParseError: syntax error: line 1, column 0

我试图过滤的XML文件位于同一项目文件夹中。我尝试使用文件名提供路径，但仍然无效。

<?xml version="1.0" encoding="UTF-8"?>
<cars>
    <make name="toyota">
        <model name="tacoma" />
        <model name="tundra" />
    </make>
    <make name="ford">
        <model name="escort" />
        <model name="taurus" />
    </make>
    <make name="chevy">
        <model name="silverado" />
        <model name="volt" />
    </make>
</cars>

Answer 1

现在工作正常但我仍在改进它。谢谢

我在main.py中做了这个修改：

path = "/Users/benbitdiddle/PycharmProjects/VehicleFilter/"
CF = CarFilter(path+args.file_name, args.car_make)
CF.filterCar()

并改变了＆＃39; w＆＃39; wb＆＃39;在CarFilter.py类文件中：

    with open(self.file_name, 'wb') as car_file:
        self.vehicles.write(car_file)

elementTree没有打开和解析我的xml文件

1 个答案: