VTS suite doesn't run because of exception

Question

I tried to run the vts suite with:

run vts

But it doesn't run any module and gives this exception:

 I/ResultReporter: Invocation finished in 4s. PASSED: 0, FAILED: 0, MODULES: 0 of 150

and gives the following exception

E/CommandScheduler: com.android.tradefed.targetprep.TargetSetupError: Failed to create virtualenv
java.lang.RuntimeException: com.android.tradefed.targetprep.TargetSetupError: Failed to create virtualenv

Answer 1

The virtualenv python package was not installed so I installed virtualenv package:

sudo pip install virtualenv

and

sudo pip3 install virtualenv

Answer 2

If you have installed virtualenv and still you are facing this issue, you have to check your proxy settings.

Set http_proxy and https_proxy variables and then you re-run the vts again.

Note : 1) http_proxy & https_proxy can be set in Start -> Edit the environment variables in Windows. 2) In Linux you can set it by changing /etc/environment file. 3) Proxy differs from system to system.