PythonVirtualenvHelper

public class PythonVirtualenvHelper
extends Object

java.lang.Object
↳	com.android.tradefed.util.PythonVirtualenvHelper

A helper class for activating Python 3 virtual environment.

Summary

Fields
`public static final String`	`VIRTUAL_ENV`

Public constructors
`PythonVirtualenvHelper()`

Public methods
`static void`	`activate(IRunUtil runUtil, File virtualenvDir)` Activate virtualenv for a RunUtil.
`static String`	`getPackageInstallLocation(IRunUtil runUtil, String virtualenvPath)` Gets python package install location.
`static String`	`getPythonBinDir(String virtualenvPath)` Gets python bin directory path.

public static final String VIRTUAL_ENV

public PythonVirtualenvHelper ()

public static void activate (IRunUtil runUtil, 
                File virtualenvDir)

Activate virtualenv for a RunUtil.

Parameters
`runUtil`	`IRunUtil`: an utility object for running virtualenv activation commands.
`virtualenvDir`	`File`: a File object representing the created virtualenv directory.

public static String getPackageInstallLocation (IRunUtil runUtil, 
                String virtualenvPath)

Gets python package install location.

This method will call /path/to/venv/bin/pip3 show pip and parse out package location from stdout output.

Parameters
`runUtil`	`IRunUtil`: an utility object for running for running commands.
`virtualenvPath`	`String`: the path to the created virtualenv directory.

Returns
`String`	a string representing the absolute path to the location where Python packages are installed.

public static String getPythonBinDir (String virtualenvPath)

Gets python bin directory path.

This method will check the directory existence.

Parameters
`virtualenvPath`	`String`

Returns
`String`	str, the path to the python bin directory in venv.

Throws
`NullPointerException`	if arg virtualenvPath is null.
`RuntimeException`	if /path/to/venv/bin does not exist.