✅ test for python=3.9

Zeroto521 · Zeroto521 · commit ffa26ab638ff · 2020-09-22T22:43:53.000+08:00
diff --git a/.travis.yml b/.travis.yml
@@ -4,6 +4,7 @@ python:
   - "3.6"
   - "3.7"
   - "3.8"
+  - "3.9"
 
 before_install:
   - sudo apt-get update
