Try using coverage.py to encode coverage results for codeclimate

.travis.yml

@@ -29,7 +29,7 @@ python:
 install:
   - TEST_DIR=$PWD
   - pip install --upgrade pip setuptools wheel
-  - pip install coveralls nose tables
+  - pip install coverage coveralls nose tables
   - pip install -r requirements.txt
   - if [[ $TESTS_TO_RUN == *'advanced_tests'* ]]; then pip install lightgbm keras tensorflow catboost xgboost; fi
 
@@ -43,4 +43,5 @@ script:
   - coveralls
 
 after_script: # Code coverage for codeclimate
+  - coverage xml
   - ./cc-test-reporter after-build --exit-code $TRAVIS_TEST_RESULT