从pytest使用AdWordsClient时出错 - 检测到递归（相同的本地人和位置）

Question

我需要编写一组测试来检查是否有一些针对Google AdWords API的调用带来了正确的数据。

出于这个目的，我写了一个产生谷歌客户端的fixture方法：

@pytest.fixture
def google_client():
    client = adwords.AdWordsClient.LoadFromStorage('tests/googleads.yaml')
    client.cache = common.ZeepServiceProxy.NO_CACHE

    return client

然后我有一种尝试连接到Google API的方法，但在此之前，只是在尝试获取报表下载时

def test_performance_report(google_client):
    google_client.SetClientCustomerId(*****)
    report_downloader = google_client.GetReportDownloader(version='v201809')
    > 

它打破了这个堆栈跟踪：

tests/test_googleads_api.py:12:
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
env/lib/python3.6/site-packages/googleads/adwords.py:478: in GetReportDownloader
    return ReportDownloader(self, version, server)
env/lib/python3.6/site-packages/googleads/adwords.py:1321: in __init__
    self.proxy_config, self._namespace, self._adwords_client.cache)
env/lib/python3.6/site-packages/googleads/common.py:821: in __init__
    data = transport.load(endpoint)
env/lib/python3.6/site-packages/zeep/transports.py:110: in load
    content = self._load_remote_data(url)
env/lib/python3.6/site-packages/zeep/transports.py:126: in _load_remote_data
    response = self.session.get(url, timeout=self.load_timeout)
env/lib/python3.6/site-packages/requests/sessions.py:546: in get
    return self.request('GET', url, **kwargs)
env/lib/python3.6/site-packages/requests/sessions.py:533: in request
    resp = self.send(prep, **send_kwargs)
env/lib/python3.6/site-packages/requests/sessions.py:646: in send
    r = adapter.send(request, **kwargs)
env/lib/python3.6/site-packages/requests/adapters.py:449: in send
    timeout=timeout
env/lib/python3.6/site-packages/urllib3/connectionpool.py:600: in urlopen
    chunked=chunked)
env/lib/python3.6/site-packages/urllib3/connectionpool.py:343: in _make_request
    self._validate_conn(conn)
env/lib/python3.6/site-packages/urllib3/connectionpool.py:839: in _validate_conn
    conn.connect()
env/lib/python3.6/site-packages/urllib3/connection.py:332: in connect
    cert_reqs=resolve_cert_reqs(self.cert_reqs),
env/lib/python3.6/site-packages/urllib3/util/ssl_.py:281: in create_urllib3_context
    context.options |= options
/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/ssl.py:465: in options
    super(SSLContext, SSLContext).options.__set__(self, value)
/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/ssl.py:465: in options
    super(SSLContext, SSLContext).options.__set__(self, value)
E   RecursionError: maximum recursion depth exceeded
!!! Recursion detected (same locals & position)

只是要注意相同的代码在生产中起作用，但是当在测试中运行时它会中断。我不明白什么是错的，我会感激任何帮助

我正在运行这个：

platform darwin - Python 3.6.7，pytest-4.3.0，py-1.7.0，pluggy-0.8.0 plugins：flask-0.14.0，celery-4.2.0

DEBUG：如果我从python控制台运行它，它可以工作，但从测试它不会：

from requests.packages.urllib3.util.ssl_ import create_urllib3_context
    create_urllib3_context()
    print(ssl.SSLContext)

错误：

env/lib/python3.6/site-packages/urllib3/util/ssl_.py:281: in create_urllib3_context
    context.options |= options
/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/ssl.py:465: in options
    super(SSLContext, SSLContext).options.__set__(self, value)
/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/ssl.py:465: in options
    super(SSLContext, SSLContext).options.__set__(self, value)
E   RecursionError: maximum recursion depth exceeded while calling a Python object
!!! Recursion detected (same locals & position)

谢谢！

更新1我补充说：

import eventlet
eventlet.monkey_patch()

在我的conftest.py之前的其他任何事情，现在我收到此错误：

            except OSError as err: # timeout error
>               raise URLError(err)
E               urllib.error.URLError: <urlopen error [SSL: CERTIFICATE_VERIFY_FAILED] certificate verify failed (_ssl.c:847)>

/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/urllib/request.py:1320: URLError

更新2第二个问题是Python OpenSSL版本，我按照这篇文章的建议解决了它：

ssl.SSLError: [SSL: CERTIFICATE_VERIFY_FAILED] certificate verify failed (_ssl.c:749)

Answer 1

这看起来像gevent和requests之间的糟糕互动，如this issue所述

确保你使用gevent，你也在测试中修补它 - 你的根conftest.py是放置gevent修补代码的好地方：

from gevent import monkey
monkey.patch_all()