Merge pull request #86 from wangnuannuan/feature/travisci

travis: modify python version 2.7 to 3.6

Author: Wayne Ren

.ci/toolchain.py

@@ -32,7 +32,7 @@ def store_gnu_toolchain(version, path):
     gnu_root_path = None
     gnu_file_path = None
     if gnu_tgz_path is None:
-        print "Can't download gnu {} ".format(version)
+        print("Can't download gnu {} ".format(version))
 
     new_path = os.path.join(path, gnu_version)
     if gnu_version not in os.listdir(path):

.travis.yml

@@ -1,5 +1,5 @@
 language: python
-python: 2.7
+python: 3.6
 
 sudo: required
 dist: trusty