Recent addition breaks library on Google App Engine.

[jstephenson]

The recent addition of a use of multiprocessing has broken this on Google App Engine (as it doesn't support mp).

https://github.com/googleapis/gax-python/blame/4e15ca6412b54950c20705a72cda54ee27ba9436/google/gax/__init__.py#L35

Upon execution (truncated):

     [exec]   File "/path-to-packages/google/gax/__init__.py", line 35, in <module>
     [exec]     import multiprocessing as mp
     [exec]   File "/usr/lib/python2.7/multiprocessing/__init__.py", line 65, in <module>
     [exec]     from multiprocessing.util import SUBDEBUG, SUBWARNING
     [exec]   File "/usr/lib/python2.7/multiprocessing/util.py", line 41, in <module>
     [exec]     from subprocess import _args_from_interpreter_flags
     [exec] ImportError: cannot import name _args_from_interpreter_flag

Obviously this is quite the inconvenience for GCP customers who want to use the GAX backend for Google's APIs.

[nilleb]

A gist about how to address this problem (kind of hack): https://gist.github.com/nilleb/419122f2f6f1228650dd2dccbd01c5af

[theacodes]

@jstephenson we're looking into this. As a heads up, even if you get gax to work, grpc-based APIs will not work on App Engine standard right now.

[nilleb]

@jonparrott which is the problem, more precisely ? Le 17 févr. 2017 5:54 PM, "Jon Wayne Parrott" <notifications@github.com> a écrit :

…

@jstephenson <https://github.com/jstephenson> we're looking into this. As a heads up, even if you get gax to work, grpc-based APIs will not work on App Engine standard right now. — You are receiving this because you commented. Reply to this email directly, view it on GitHub <#149 (comment)>, or mute the thread <https://github.com/notifications/unsubscribe-auth/ADVmx7sNA8pDUtWxQw9_T7f3YUqff5c4ks5rddC9gaJpZM4LsGVS> .

[theacodes]

@nilleb grpc isn't yet supported on App Engine standard.