问题
I'm testing Google App Engine and trying to run a simple function to upload files to either the Blobstore or Cloud Storage. I'm typing the Python code directly in the Cloud Shell of my instance. The code is failing when I call:
from google.appengine.ext import blobstore
I get the error code:
Traceback (most recent call last):
File "upload_test.py", line 1, in <module>
from google.appengine.api import users
ImportError: No module named 'google.appengine'
Even though the documentation says that: You can use Google Cloud Shell, which comes with git and Cloud SDK already installed, I've tried installing a bunch of libraries:
gcloud components install app-engine-python
pip install google-cloud-datastore
pip install google-cloud-storage
pip install --upgrade google-api-python-client
I'm still getting the same error. How can I get the appengine library to work? Alternatively, is this the wrong method for creating an app that allows the user to upload files?
回答1:
The google.appengine module is baked into the first-generation Python (2.7) runtime. It's not available to install via pip, in the second-generation (3.7) runtime, or in Cloud Shell.
The only way to use it is by writing and deploying a first-generation App Engine app.
回答2:
Thanks @Dustin Ingram
I found the answer in this page.
The current "correct" way of uploading to Cloud Storage is to use google.cloud.storage. The tutorial I linked above explains how to implement it.
The impression I have, however, is that this uses twice the bandwidth as the solution via google.appengine. Originally, the front-end would receive an upload url and send the file directly to the Blobstore (or to Cloud Storage). Now the application uploads to the back-end which, in turn, uploads to Cloud Storage.
I'm not too worried, as I will not be dealing with excessively large files, but it seems strange that the ability to upload directly has been discontinued.
In any case, my problem has been solved.
来源：https://stackoverflow.com/questions/54132755/no-module-named-google-appengine-from-within-cloud-shell