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我有一堆运行一些 python 代码的小树莓派，这些代码使用 gcloud-python 数据存储包直接保存到数据存储区（跳过 GAE）。这很好用。我现在想使用 Google App Engine 通过网络和移动客户端呈现数据。在我的 MacBook 上，我使用安装程序和 gcloud 通过 pip 安装了 GAE。我可以编写一个简单的 python 脚本并直接从终端执行它，该终端能够通过 gcloud 从数据存储中写入和读取 - 这也很好。

但是，当我尝试将相同的代码合并到 GAE 中时，它失败了。根据我的研究，我认为这是一个 PATH 问题，但经过几个小时的各种尝试，我无法解决这个问题。建议将不胜感激。

我相信这篇文章与我的问题类似：Google App Engine, Change which python version

以下是一些可能相关的信息：

蟒蛇版本

$ which python
/usr/bin/python

根据引用的 Stack Overflow 问题，我将 GAE 的首选项设置为具有 /usr/bin/python 的 Python 路径。我试过了

$路径

$ echo $PATH
/Users/sheridangray/Projects/adt-bundle-mac-x86_64-20140702/sdk/google-cloud-sdk/bin:/Users/sheridangray/bin:/usr/local/bin:/usr/bin:/bin:/usr/sbin:/sbin:/usr/local/bin:/opt/X11/bin

来自 Python 解释器的 os.path

$ python
Python 2.7.6 (default, Sep  9 2014, 15:04:36)
[GCC 4.2.1 Compatible Apple LLVM 6.0 (clang-600.0.39)] on darwin
Type "help", "copyright", "credits" or "license" for more information.
>>> import os
>>> os.path
<module 'posixpath' from '/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/posixpath.pyc'>

gcloud 安装

$ pip install --upgrade gcloud
Requirement already up-to-date: gcloud in /Library/Python/2.7/site-packages
...

Python 2.7 参考资料

$ sudo find / -name python2.7
Password:
/Applications/Dropbox.app/Contents/Frameworks/Python.framework/Versions/2.7/include/python2.7
/Applications/Dropbox.app/Contents/Frameworks/Python.framework/Versions/2.7/lib/python2.7
/Applications/Dropbox.app/Contents/Resources/include/python2.7
/Applications/Dropbox.app/Contents/Resources/lib/python2.7
/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.10.sdk/System/Library/Frameworks/Python.framework/Versions/2.7/include/python2.7
/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.10.sdk/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7
/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.10.sdk/usr/include/python2.7
/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.10.sdk/usr/lib/python2.7
find: /dev/fd/3: Not a directory
find: /dev/fd/4: Not a directory
/System/Library/Frameworks/Python.framework/Versions/2.7/bin/python2.7
/System/Library/Frameworks/Python.framework/Versions/2.7/include/python2.7
/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7
/usr/bin/python2.7
/usr/lib/python2.7

相关代码

from gcloud import datastore

class MainHandler(webapp.RequestHandler):
  def get(self):
     dataset = datastore.get_dataset(dataset_id, email_address, private_key_file)

GAE 日志文件

*** Running dev_appserver with the following flags:
--skip_sdk_update_check=yes --port=8080 --admin_port=8000
Python command: /usr/bin/python
INFO     2014-11-21 09:02:03,276 devappserver2.py:745] Skipping SDK update check.
INFO     2014-11-21 09:02:03,288 api_server.py:172] Starting API server at: http://localhost:49183
INFO     2014-11-21 09:02:03,292 dispatcher.py:185] Starting module "default" running at: http://localhost:8080
INFO     2014-11-21 09:02:03,294 admin_server.py:118] Starting admin server at: http://localhost:8000
INFO     2014-11-21 09:02:34,319 module.py:709] default: "GET / HTTP/1.1" 200 2
INFO     2014-11-21 09:02:34,455 module.py:709] default: "GET /favicon.ico HTTP/1.1" 200 8348
INFO     2014-11-21 09:02:44,359 module.py:387] Detected file changes:
  /Users/sheridangray/Projects/city-pulse-web/main.py
ERROR    2014-11-21 09:02:46,443 webapp2.py:1552] gcloud
Traceback (most recent call last):
      File "/Users/sheridangray/Projects/adt-bundle-mac-x86_64-20140702/sdk/google-cloud-sdk/platform/GoogleAppEngineLauncher.app/Contents/Resources/GoogleAppEngine-default.bundle/Contents/Resources/google_appengine/lib/webapp2-2.5.2/webapp2.py", line 1535, in __call__
rv = self.handle_exception(request, response, e)
  File "/Users/sheridangray/Projects/adt-bundle-mac-x86_64-20140702/sdk/google-cloud-sdk/platform/GoogleAppEngineLauncher.app/Contents/Resources/GoogleAppEngine-default.bundle/Contents/Resources/google_appengine/lib/webapp2-2.5.2/webapp2.py", line 1529, in __call__
rv = self.router.dispatch(request, response)
  File "/Users/sheridangray/Projects/adt-bundle-mac-x86_64-20140702/sdk/google-cloud-sdk/platform/GoogleAppEngineLauncher.app/Contents/Resources/GoogleAppEngine-default.bundle/Contents/Resources/google_appengine/lib/webapp2-2.5.2/webapp2.py", line 1278, in default_dispatcher
return route.handler_adapter(request, response)
  File "/Users/sheridangray/Projects/adt-bundle-mac-x86_64-20140702/sdk/google-cloud-sdk/platform/GoogleAppEngineLauncher.app/Contents/Resources/GoogleAppEngine-default.bundle/Contents/Resources/google_appengine/lib/webapp2-2.5.2/webapp2.py", line 1102, in __call__
return handler.dispatch()
  File "/Users/sheridangray/Projects/adt-bundle-mac-x86_64-20140702/sdk/google-cloud-sdk/platform/GoogleAppEngineLauncher.app/Contents/Resources/GoogleAppEngine-default.bundle/Contents/Resources/google_appengine/lib/webapp2-2.5.2/webapp2.py", line 572, in dispatch
return self.handle_exception(e, self.app.debug)
  File "/Users/sheridangray/Projects/adt-bundle-mac-x86_64-20140702/sdk/google-cloud-sdk/platform/GoogleAppEngineLauncher.app/Contents/Resources/GoogleAppEngine-default.bundle/Contents/Resources/google_appengine/lib/webapp2-2.5.2/webapp2.py", line 570, in dispatch
return method(*args, **kwargs)
  File "/Users/sheridangray/Projects/city-pulse-web/main.py", line 63, in get
dataset = datastore.get_dataset(dataset_id, email_address, private_key_file)
  File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/gcloud/datastore/__init__.py", line 103, in get_dataset
connection = get_connection(client_email, private_key_path)
  File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/gcloud/datastore/__init__.py", line 65, in get_connection
    from gcloud.datastore.connection import Connection
  File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/gcloud/datastore/connection.py", line 3, in <module>
    from gcloud import connection
  File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/gcloud/connection.py", line 8, in <module>
class Connection(object):
  File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/gcloud/connection.py", line 24, in Connection
USER_AGENT = "gcloud-python/{0}".format(get_distribution('gcloud').version)
  File "/Users/sheridangray/Projects/adt-bundle-mac-x86_64-20140702/sdk/google-cloud-sdk/platform/GoogleAppEngineLauncher.app/Contents/Resources/GoogleAppEngine-default.bundle/Contents/Resources/google_appengine/lib/setuptools-0.6c11/pkg_resources.py", line 311, in get_distribution
if isinstance(dist,Requirement): dist = get_provider(dist)
  File "/Users/sheridangray/Projects/adt-bundle-mac-x86_64-20140702/sdk/google-cloud-sdk/platform/GoogleAppEngineLauncher.app/Contents/Resources/GoogleAppEngine-default.bundle/Contents/Resources/google_appengine/lib/setuptools-0.6c11/pkg_resources.py", line 197, in get_provider
return working_set.find(moduleOrReq) or require(str(moduleOrReq))[0]
  File "/Users/sheridangray/Projects/adt-bundle-mac-x86_64-20140702/sdk/google-cloud-sdk/platform/GoogleAppEngineLauncher.app/Contents/Resources/GoogleAppEngine-default.bundle/Contents/Resources/google_appengine/lib/setuptools-0.6c11/pkg_resources.py", line 666, in require
needed = self.resolve(parse_requirements(requirements))
  File "/Users/sheridangray/Projects/adt-bundle-mac-x86_64-20140702/sdk/google-cloud-sdk/platform/GoogleAppEngineLauncher.app/Contents/Resources/GoogleAppEngine-default.bundle/Contents/Resources/google_appengine/lib/setuptools-0.6c11/pkg_resources.py", line 565, in resolve
    raise DistributionNotFound(req)  # XXX put more info here
DistributionNotFound: gcloud
INFO     2014-11-21 09:02:46,456 module.py:709] default: "GET / HTTP/1.1" 500 5010
INFO     2014-11-21 09:02:46,514 module.py:709] default: "GET /favicon.ico HTTP/1.1" 304 -
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2 回答 2

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您可以gcloud-python在 App Engine 上运行，但需要做一些额外的工作。查看我编写的一个框架项目，它可以正常工作。

要涵盖的主要基础是：

获取依赖项

在install_gcloud.sh,pip用于gcloud在应用程序内部安装及其依赖项

pip install --target="application/vendor/" gcloud

（如另一个答案中所述，本地安装不会在部署时上传到 App Engine。）

修改依赖

通过pip-installing with --targetset，pkg_resources.get_distribution 将按预期工作（它在您的堆栈跟踪中失败）。

此外pytz，默认情况下，读取次数过多，无法在 App Engine 上正常运行，因此gae-pytz改为使用。因此，pytz 需要修改一些导入。

此外，为了减少 Compute Engine 检查开销（网络开销），oauth2client.client可以修改模块。

这两个调整都可以在一次提交中找到。

使进口工作

上面的脚本将所有依赖项放在一个名为的目录中vendor/，并 通过Darth Vendorappengine_config.py将其添加到导入路径中 ：

import darth
darth.vendor('vendor')

此外，由于protobuf依赖项也是 google包的一部分（就像所有 App Engine 导入一样，例如 google.appengine.ext.ndb），您需要修改__path__ 与该包关联的：

import os
import google

curr_dir = os.path.abspath(os.path.dirname(__file__))
vendor_dir = os.path.join(curr_dir, 'vendor')
google.__path__.append(os.path.join(vendor_dir, 'google'))

警告（截至 2015 年 1 月 22 日）

请注意，gcloud-python在 App Engine 中使用会比使用原生 App Engine 库db或ndb. 这是因为它们使用直接 RPC 进入 App Engine 运行时，而 gcloud-python将使用 App Engine 之外的 HTTP 与 Cloud Datastore API 对话。

注意：我在最初发布后更新了这个，它引用了历史上的前一点。

于 2015-01-22T18:01:36.237 回答
1

Mac 上的 GAE 无法访问安装在 Mac 上默认位置的 Python 包。你需要这样做：

ln -s /Library/Python/2.7/site-packages/.../gcloud /Users/sheridangray/Projects/city-pulse-web/gcloud

（需要用相关的路径信息替换...）

于 2014-11-21T15:06:32.147 回答