错误:没有这样的文件或目录

Question

我试图用python从XML文件中提取数据.我尝试了以下代码.

from xml.etree.ElementTree import ElementTree
 tree = ElementTree()
tree.parse("data_v2.xml")

错误信息:

IOError: [Errno 2] No such file or directory: 'data_v2.xml'.

Answer 1

这不是XML错误.这意味着data_v2.xml不存在 - 系统(操作系统)找不到它.也许这个名字是错的,也许你需要提供完整的路径.

import traceback
# ...
try:
    input_fname = "data_v2.xml"
    tree.parse(input_fname)
    # ...
except IOError:
    ex_info = traceback.format_exc()
    print('ERROR!!! Cannot parse file: %s' % (input_fname))
    print('ERROR!!! Check if this file exists and you have right to read it!')
    print('ERROR!!! Exception info:\n%s' % (ex_info))