From e4a455f53a61f6b9e63bdda8920e51f0287863a8 Mon Sep 17 00:00:00 2001
From: Sutou Kouhei <kou@clear-code.com>
Date: Sat, 23 Nov 2019 07:28:28 +0900
Subject: [PATCH] [CI][Python] Use Python 3 for docker-compose

We get the following error when we use Python 2:

    $ docker-compose pull $BUILD_IMAGE
    Traceback (most recent call last):
      File "/usr/local/bin/docker-compose", line 6, in <module>
        from compose.cli.main import main
      File "/usr/local/lib/python2.7/dist-packages/compose/cli/main.py", line 18, in <module>
        import docker
      File "/usr/local/lib/python2.7/dist-packages/docker/__init__.py", line 2, in <module>
        from .api import APIClient
      File "/usr/local/lib/python2.7/dist-packages/docker/api/__init__.py", line 2, in <module>
        from .client import APIClient
      File "/usr/local/lib/python2.7/dist-packages/docker/api/client.py", line 5, in <module>
        import requests
      File "/usr/local/lib/python2.7/dist-packages/requests/__init__.py", line 95, in <module>
        from urllib3.contrib import pyopenssl
      File "/usr/local/lib/python2.7/dist-packages/urllib3/contrib/pyopenssl.py", line 46, in <module>
        import OpenSSL.SSL
      File "/usr/lib/python2.7/dist-packages/OpenSSL/__init__.py", line 8, in <module>
        from OpenSSL import rand, crypto, SSL
      File "/usr/lib/python2.7/dist-packages/OpenSSL/SSL.py", line 118, in <module>
        SSL_ST_INIT = _lib.SSL_ST_INIT
    AttributeError: 'module' object has no attribute 'SSL_ST_INIT'
---
 dev/tasks/python-wheels/travis.linux.yml | 13 ++++---------
 1 file changed, 4 insertions(+), 9 deletions(-)

diff --git a/dev/tasks/python-wheels/travis.linux.yml b/dev/tasks/python-wheels/travis.linux.yml
index 932bbf0cb21..d8d9ef3a4d9 100644
--- a/dev/tasks/python-wheels/travis.linux.yml
+++ b/dev/tasks/python-wheels/travis.linux.yml
@@ -16,15 +16,13 @@
 
 os: linux
 
+dist: bionic
+
+language: python
+
 services:
   - docker
 
-# Update docker to support newer docker-compose versions
-addons:
-  apt:
-    packages:
-      - docker-ce
-
 # don't build twice
 if: tag IS blank
 
@@ -33,9 +31,6 @@ env:
     - PLAT=x86_64
     - TRAVIS_TAG={{ task.tag }}
 
-before_script:
-  - sudo pip install -U docker-compose
-
 script:
   - git clone --no-checkout {{ arrow.remote }} arrow
   - git -C arrow fetch -t {{ arrow.remote }} {{ arrow.branch }}