我修改了一段代码，用于将两个或多个xml文件合并为一个.我让它在本地工作，不使用谷歌云存储，也不在谷歌云存储上存储文件.
我想通过云函数使用它，除了将最终的xml文件上传到谷歌云存储之外，它似乎工作得很好.
import os
import wget
import logging
from io import BytesIO
from google.cloud import storage
from xml.etree import ElementTree as ET
def merge(event, context):
client = storage.Client()
bucket = client.get_bucket('mybucket')
test1 = bucket.blob("xml-file1.xml")
inputxml1 = test1.download_as_string()
root1 = ET.fromstring(inputxml1)
test2 = bucket.blob("xml-file2.xml")
inputxml2 = test2.download_as_string()
root2 = ET.fromstring(inputxml2)
copy_files = [e for e in root1.findall('./SHOPITEM')]
src_files = set([e.find('./SHOPITEM') for e in copy_files])
copy_files.extend([e for e in root2.findall('./SHOPITEM') if e.find('./CODE').text not in src_files])
files = ET.Element('SHOP')
files.extend(copy_files)
blob = bucket.blob("test.xml")
blob.upload_from_string(files)
我试过这些功能.写作和写作.tostring但没有成功.