Upgrade build env to bionic and python version to the v3.8.0 (#976)

chenrui333 · diemol · commit cb964c5e4cb1 · 2019-10-20T08:02:56.000+02:00
diff --git a/.travis.yml b/.travis.yml
@@ -1,6 +1,7 @@
+dist: bionic
 language: python
-
-sudo: required
+python:
+  - "3.8.0"
 
 services:
   - docker
