Update travis file to use python with the correct version

joelwurtz · joelwurtz · commit 3740eed3579f · 2019-04-02T12:55:13.000+02:00
diff --git a/.travis.yml b/.travis.yml
@@ -1,10 +1,16 @@
 sudo: false
 
+language: python
+
+python:
+    - 3.7
+
 addons:
     apt_packages:
         - enchant
 
 install:
+    - pip install pipenv
     - pipenv install
 
 script:
