python 2.7 virtual env-没有名为lxml.objectify的模块

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!

Answer 1

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.