在Google App Engine中使用请求python库

Question

我试图在Google App Engine上使用真棒请求库。我找到了一个urllib3的补丁，它依赖于与App Engine兼容的请求。 https://github.com/shazow/urllib3/issues/61

我可以成功

import requests 

但随后

response = requests.get('someurl') 

失败，出现以下回溯。这是怎么回事？

Traceback (most recent call last): 
    File "/Applications/GoogleAppEngineLauncher.app/Contents/Resources/GoogleAppEngine-default.bundle/Contents/Resources/google_appengine/google/appengine/ext/admin/__init__.py", line 317, in post 
    exec(compiled_code, globals()) 
    File "<string>", line 6, in <module> 
    File "/Users/Rohan/Dropbox/MuktiTechnologiesINC/MuktiTechnologies/GAE/humanmictweet/GAE/libraries/requests/api.py", line 52, in get 
    return request('get', url, **kwargs) 
    File "/Users/Rohan/Dropbox/MuktiTechnologiesINC/MuktiTechnologies/GAE/humanmictweet/GAE/libraries/requests/api.py", line 40, in request 
    return s.request(method=method, url=url, **kwargs) 
    File "/Users/Rohan/Dropbox/MuktiTechnologiesINC/MuktiTechnologies/GAE/humanmictweet/GAE/libraries/requests/sessions.py", line 208, in request 
    r.send(prefetch=prefetch) 
    File "/Users/Rohan/Dropbox/MuktiTechnologiesINC/MuktiTechnologies/GAE/humanmictweet/GAE/libraries/requests/models.py", line 458, in send 
    self.auth = get_netrc_auth(url) 
    File "/Users/Rohan/Dropbox/MuktiTechnologiesINC/MuktiTechnologies/GAE/humanmictweet/GAE/libraries/requests/utils.py", line 43, in get_netrc_auth 
    for loc in locations: 
    File "/Users/Rohan/Dropbox/MuktiTechnologiesINC/MuktiTechnologies/GAE/humanmictweet/GAE/libraries/requests/utils.py", line 40, in <genexpr> 
    locations = (os.path.expanduser('~/{0}'.format(f)) for f in NETRC_FILES) 
    File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/posixpath.py", line 260, in expanduser 
    userhome = pwd.getpwuid(os.getuid()).pw_dir 
AttributeError: 'module' object has no attribute 'getuid' 

Answer 1

如前所述，master branch of standalone urllib3理应支持的AppEngine现在（我会做一个适当的PyPI发布一次有人证实了这一事实），但要求还不支持AppEngine上，因为它使有关各种文件系统的东西加载配置文件假设这在AppEngine上不存在。具体来说，您遇到的错误与加载~/.netrc配置文件有关。

参见Issue #493。

对于它的价值，在urllib3相当于将是：

import urllib3 
http = urllib3.PoolManager() 
response = http.request('GET', 'someurl') 

更新：urllib3 v1.3昨天，包括AppEngine上支持释放。

Answer 2

对谷歌的AppEngine生产工作（1.9.18版）requests版本2.3.0（仅！）（但不是在SDK），如果你启用了结算，使插座的支持。在AppEngine上SDK

请求失败，所有的https：//请求：

ConnectionError: ('Connection aborted.', error(13, 'Permission denied')) 

请求版本2.4.1失败：

File "distlib/requests/adapters.py", line 407, in send 
    raise ConnectionError(err, request=request) 
    ConnectionError: ('Connection aborted.', error(13, 'Permission denied')) 

请求版本2.5.1失败：

File "distlib/requests/adapters.py", line 415, in send 
    raise ConnectionError(err, request=request) 
    ConnectionError: ('Connection aborted.', error(13, 'Permission denied')) 

插座支持信息：https://cloud.google.com/appengine/docs/python/sockets/

PS：如果您打算在GAE上使用请求，请以非常痛苦的方式替换awsome。

另请参见：Can Python Requests library be used on Google App Engine?

Answer 3

您可以使用在谷歌应用程序引擎的最新版本的请求与requests-toolbelt帮助。这配置请求使用urllib3对App Engine的URLFetch服务的基础支持。

• Google's documentation on how to use Requests。
• Straightforward sample of using Requests on Google App Engine。
• request-toolbelt's AppEngineAdapter。
• urllib3's AppEngineManager。

的