[ 
https://issues.apache.org/jira/browse/BEAM-6024?focusedWorklogId=184293&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-184293
 ]

ASF GitHub Bot logged work on BEAM-6024:
----------------------------------------

                Author: ASF GitHub Bot
            Created on: 11/Jan/19 18:37
            Start Date: 11/Jan/19 18:37
    Worklog Time Spent: 10m 
      Work Description: tvalentyn commented on pull request #7423: [BEAM-6024] 
Build Python 3 container image with Gradle
URL: https://github.com/apache/beam/pull/7423#discussion_r247209615
 
 

 ##########
 File path: 
buildSrc/src/main/groovy/org/apache/beam/gradle/BeamModulePlugin.groovy
 ##########
 @@ -1523,7 +1523,14 @@ artifactId=${project.name}
 
       project.task('setupVirtualenv')  {
         doLast {
-          project.exec { commandLine 'virtualenv', "${project.ext.envdir}" }
+          def virtualenvCmd = [
+            'virtualenv',
+            "${project.ext.envdir}",
+          ]
+          if (project.hasProperty('python3')) {
+            virtualenvCmd += '--python=python3'
 
 Review comment:
   In the future, I'd like us to be able to customize which Python 3 version to 
use (3.5, 3.6, etc). Dockerfile can take an argument for the FROM clause as 
well. This can happen in the future PR, but for the scope of this PR I'd like 
to make sure that we use the same Python 3 version to build the SDK as we use 
in the Dockerfile. So we I think should pass `--python=python3.5`, but we could 
make this a constant somewhere up in the file and make a note that the version 
should match the version we [inside the Docker 
container](https://github.com/apache/beam/blob/3a531323322b3f5bbd695b64744a0603a1c97607/sdks/python/container/py3/Dockerfile#L19).
   
 
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Issue Time Tracking
-------------------

    Worklog Id:     (was: 184293)
    Time Spent: 40m  (was: 0.5h)

> Gradle setupVirtualenv supports Python 3
> ----------------------------------------
>
>                 Key: BEAM-6024
>                 URL: https://issues.apache.org/jira/browse/BEAM-6024
>             Project: Beam
>          Issue Type: Sub-task
>          Components: sdk-py-harness
>            Reporter: Mark Liu
>            Assignee: Mark Liu
>            Priority: Major
>          Time Spent: 40m
>  Remaining Estimate: 0h
>
> Need to depend on Python 3 virtualenv in few places:
> - Build Dataflow worker container in Python 3
> - Run ValidatesRunner and integration tests on Jenkins



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