edited tests launcher for python ccxt#445

.travis.yml

@@ -32,7 +32,7 @@ script:
 - cd ..
 - npm run test-base
 - set +e # (we deactivate set -e here, to prevent sudden log truncation in Travis, as it was suggested by the support team)
-- node run-tests --js --python --python3; export TESTS_FAILED=$?
+- node run-tests --js --python2 --python3; export TESTS_FAILED=$?
 - set -e # activate it again!
 - if [ "$TESTS_FAILED" -ne 0 ]; then exit 1; fi
 - if [ "$TRAVIS_PULL_REQUEST" = "false" ] && [ "$TRAVIS_BRANCH" = "master" ]; then env COMMIT_MESSAGE=${NPM_VERSION:1} GITHUB_TOKEN=${GITHUB_TOKEN} ./push.sh; fi

run-tests.js

@@ -132,7 +132,8 @@ const testExchange = async (exchange) => {
         , allTests = [
 
             { language: 'JavaScript', key: '--js',      exec: ['node',      'js/test/test.js',       ...args] },
-            { language: 'Python',     key: '--python',  exec: ['python2',   'python/test/test.py',       ...args] },
+            { language: 'Python',     key: '--python',  exec: ['python',    'python/test/test.py',       ...args] },
+            { language: 'Python',     key: '--python2', exec: ['python2',   'python/test/test.py',       ...args] },
             { language: 'Python 3',   key: '--python3', exec: ['python3',   'python/test/test_async.py', ...args] },
             { language: 'PHP',        key: '--php',     exec: ['php', '-f', 'php/test/test.php',         ...args] }
         ]