问题
i am using google cloud storage and google cloud datastore api (locally, for now), in a Standard Environment app.
I am having a very weird behaviour trying to running my tests (with pytest): i have discovered that, during tests, the dev_appserver.fix_sys_path command run by pytest-beds that i am using (https://github.com/kaste/pytest-beds/blob/master/testbeds/plugin.py#L35) puts the bundled google-cloud libraries before my custom versions:
/Users/username/google-cloud-sdk/platform/google_appengine
/Users/username/google-cloud-sdk/platform/google_appengine/lib/antlr3
/Users/username/google-cloud-sdk/platform/google_appengine/lib/fancy_urllib
/Users/username/google-cloud-sdk/platform/google_appengine/lib/ipaddr
/Users/username/google-cloud-sdk/platform/google_appengine/lib/yaml-3.10
/Users/username/google-cloud-sdk/platform/google_appengine/lib/rsa
/Users/username/google-cloud-sdk/platform/google_appengine/lib/pyasn1
/Users/username/google-cloud-sdk/platform/google_appengine/lib/pyasn1_modules
/Users/username/google-cloud-sdk/platform/google_appengine/lib/httplib2
/Users/username/google-cloud-sdk/platform/google_appengine/lib/oauth2client_devserver
/Users/username/google-cloud-sdk/platform/google_appengine/lib/six-1.9.0
/Users/username/google-cloud-sdk/platform/google_appengine
/Users/username/google-cloud-sdk/platform/google_appengine/lib/simplejson
/Users/username/google-cloud-sdk/platform/google_appengine/lib/django-1.4
/Users/username/google-cloud-sdk/platform/google_appengine/lib/endpoints-1.0
/Users/username/google-cloud-sdk/platform/google_appengine/lib/jinja2-2.6
/Users/username/google-cloud-sdk/platform/google_appengine/lib/protorpc-1.0
/Users/username/google-cloud-sdk/platform/google_appengine/lib/PyAMF-0.6.1
/Users/username/google-cloud-sdk/platform/google_appengine/lib/markupsafe-0.15
/Users/username/google-cloud-sdk/platform/google_appengine/lib/webob-1.2.3
/Users/username/google-cloud-sdk/platform/google_appengine/lib/webapp2-2.5.2
/Users/username/dev/project
/Users/username/.virtualenvs/project/bin
/Users/username/dev/project/app
/Users/username/.virtualenvs/project/lib/python27.zip
/Users/username/.virtualenvs/project/lib/python2.7
/Users/username/.virtualenvs/project/lib/python2.7/plat-darwin
/Users/username/.virtualenvs/project/lib/python2.7/plat-mac
/Users/username/.virtualenvs/project/lib/python2.7/plat-mac/lib-scriptpackages
/Users/username/.virtualenvs/project/Extras/lib/python
/Users/username/.virtualenvs/project/lib/python2.7/lib-tk
/Users/username/.virtualenvs/project/lib/python2.7/lib-old
/Users/username/.virtualenvs/project/lib/python2.7/lib-dynload
/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7
/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/plat-darwin
/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/lib-tk
/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/plat-mac
/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/plat-mac/lib-scriptpackages
/Users/username/.virtualenvs/project/lib/python2.7/site-packages
This causes the import of google.auth.crypt.base module import to fail, because it does not exist in the package version shipped with google-cloud-sdk, while i can see that version 1.3.0 on github, that is apparently the same version of the one shipped with the sdk, does.
Same for pyasn1_modules package: version 0.2.1 existing, shipped 0.11
The import errors I am having are:
from google.auth.crypt import base
ImportError: cannot import name base
and:
from pyasn1_modules import pem
ImportError: cannot import name pem
Last, but not least, the environment: MACOSX.
Google Cloud SDK 184.0.0
app-engine-python 1.9.65
app-engine-python-extras 1.9.63
beta 2017.09.15
bq 2.0.28
cloud-datastore-emulator 1.3.0
core 2018.01.05
gcloud
gsutil 4.28
UPDATE: apparently, i was using the google.cloud.storage while instead i should be using, according to the examples for standard environment (https://github.com/GoogleCloudPlatform/python-docs-samples/blob/master/appengine/standard/storage/appengine-client/main.py#L23), the package cloudstorage. I will change the code, try and update the post here.
UPDATE 2: i have created a specific github repo that should replicate the problem, just in case. Here it is:
https://github.com/brunoripa/gae_import_error
回答1:
We typically add libs to remote API with vendor system.
from google.appengine.ext import vendor
vendor.add('lib')
Module pyasn1_modules gets installed as a dependency when you install google-cloud and I am not sure of the reason behind it but, in remote API, I have observed it misses pem.py. The simple workaround would be:
# within remote API console
>>> import sys
>>> sys.modules.pop('pyasn1_modules')
<module 'pyasn1_modules' from '/Users/pjamkhande001/google-cloud-sdk/platform/google_appengine/lib/pyasn1_modules/pyasn1_modules/__init__.pyc'>
About your other issue of not being able to import from google.auth.crypt import base, you are required to gcloud auth login.
gcloud auth application-default login restores your default authentication credentials but if you want to login to the application as user, you have to gcloud auth login. Hope this helps.
来源：https://stackoverflow.com/questions/48208080/wrong-dependency-in-google-cloud-sdk-for-google-auth