python 2.7 virtual env - No module named lxml.objectify

Question

I'm using virtualenv with Python 2.7 for a Django project, on Google App Engine sandbox on Windows environment. I try to use this amazon api library which requires lxml as a dependency.

After installing lxml (and all other dependencies) and trying to import amazon api module, I'm getting the following error:

ImportError: No module named lxml.objectify

objectify module exists in the correct folder. I searched online for a solution and saw that installing lxml on Windows can be pain in the ass, but couldn't find a solution.

What I already tried:

Uninstalling and installing lxml
Installing version 3.8.0 and 3.7.3
Installing lxml as pip or binary installer
Installing lxml from whl package

Did someone faced this issue and was able to solve it?

Cheers!

Try to find `whl` package. This is strange because bin installer should help — amarynets, Sep 07 '17 at 21:14
@marni I downloaded whl package also. btw the installer only let you install lxml in python default folder (c:\python27) and not in the virtualenv folder. So I installed it and copied the files. No success ther. — Crispy Holiday, Sep 07 '17 at 21:20
And from this also: http://www.lfd.uci.edu/~gohlke/pythonlibs/#lxml — amarynets, Sep 07 '17 at 21:42
If this is a standard environment GAE app try ditching venv and follow the official documentation, see https://stackoverflow.com/questions/45885155/python-virtualenv-no-module-error/45885386#45885386 — Dan Cornilescu, Sep 07 '17 at 21:56
Possible duplicate of [python virtualenv No module error](https://stackoverflow.com/questions/45885155/python-virtualenv-no-module-error) — Dan Cornilescu, Sep 07 '17 at 22:04

score 3 · Accepted Answer · answered Sep 08 '17 at 06:07

lxml is one of App Engine's built-in third party libraries.

To use it, you need to:

add it to the libraries directive of your app.yaml file:

libraries:
- name: lxml
  version: 3.7.3

and Install it locally using pip, because it's not included in the SDK:

pip install lxml==3.7.3

or install via the vendoring process.

pip install --target lib lxml==3.7.3

If lxml is not added to app.yaml you will see the dev server will report an ImportError, regardless of how lxml was installed.

Man, I can't believe I missed it. Thanks so much! – Crispy Holiday Sep 08 '17 at 09:02 — Crispy Holiday, Sep 08 '17 at 09:02

python 2.7 virtual env - No module named lxml.objectify

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