build: explain how to test Python 3.6 or 3.7

This helps contributors understand how they can test Python 3.6 or 3.7 on Travis CI. Helps with issues like #29246 (comment)
nodejs · Sep 5, 2019 · 3043157 · 3043157
1 parent af161f0
commit 3043157
Showing 1 changed file with 4 additions and 0 deletions.
diff --git a/.travis.yml b/.travis.yml
@@ -6,9 +6,13 @@ x-ccache-setup-steps: &ccache-setup-steps
 
 os: linux
 language: cpp
+# Currently this file can only support one PYTHON_VERSION.
+# To experiment with Python 3, comment out Python 2.7 and uncomment one of the Python 3 versions.
 env:
   global:
     - PYTHON_VERSION="2.7.15"
+    # - PYTHON_VERSION="3.6.7"
+    # - PYTHON_VERSION="3.7.1"
 jobs:
   include:
     - stage: "Compile"