我有一个小型项目,非常适合Google App Engine。实现它取决于生成ZIP文件并将其返回的能力。
由于App Engine的分布式特性,据我所知,ZIP文件无法在传统意义上“内存”创建。它基本上必须生成并在单个请求/响应周期中发送。
Python zip模块是否甚至存在于App Engine环境中?
答案 0 :(得分:32)
zipfile位于appengine,重新设计example如下:
from contextlib import closing
from zipfile import ZipFile, ZIP_DEFLATED
from google.appengine.ext import webapp
from google.appengine.api import urlfetch
def addResource(zfile, url, fname):
# get the contents
contents = urlfetch.fetch(url).content
# write the contents to the zip file
zfile.writestr(fname, contents)
class OutZipfile(webapp.RequestHandler):
def get(self):
# Set up headers for browser to correctly recognize ZIP file
self.response.headers['Content-Type'] ='application/zip'
self.response.headers['Content-Disposition'] = \
'attachment; filename="outfile.zip"'
# compress files and emit them directly to HTTP response stream
with closing(ZipFile(self.response.out, "w", ZIP_DEFLATED)) as outfile:
# repeat this for every URL that should be added to the zipfile
addResource(outfile,
'https://www.google.com/intl/en/policies/privacy/',
'privacy.html')
addResource(outfile,
'https://www.google.com/intl/en/policies/terms/',
'terms.html')
答案 1 :(得分:9)
import zipfile
import StringIO
text = u"ABCDEFGHIJKLMNOPQRSTUVWXYVabcdefghijklmnopqqstuvweyxáéöüï东 廣 広 广 國 国 国 界"
zipstream=StringIO.StringIO()
file = zipfile.ZipFile(file=zipstream,compression=zipfile.ZIP_DEFLATED,mode="w")
file.writestr("data.txt.zip",text.encode("utf-8"))
file.close()
zipstream.seek(0)
self.response.headers['Content-Type'] ='application/zip'
self.response.headers['Content-Disposition'] = 'attachment; filename="data.txt.zip"'
self.response.out.write(zipstream.getvalue())
答案 2 :(得分:2)
您可以上传其他第三方 与您的应用程序库,如 只要它们是纯粹的 Python并不需要任何 不支持的标准库模块。
因此,即使默认情况下它不存在,您也可以(可能)自己包含它。 (我说可能是因为我不知道Python zip库是否需要任何“不支持的标准库模块”。