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-rwxr-xr-xtests/docker/docker.py14
1 files changed, 10 insertions, 4 deletions
diff --git a/tests/docker/docker.py b/tests/docker/docker.py
index 1620293ac8..417b0cdce1 100755
--- a/tests/docker/docker.py
+++ b/tests/docker/docker.py
@@ -258,10 +258,16 @@ class Docker(object):
return self._do_kill_instances(True)
def _output(self, cmd, **kwargs):
- return subprocess.check_output(self._command + cmd,
- stderr=subprocess.STDOUT,
- encoding='utf-8',
- **kwargs)
+ if sys.version_info[1] >= 6:
+ return subprocess.check_output(self._command + cmd,
+ stderr=subprocess.STDOUT,
+ encoding='utf-8',
+ **kwargs)
+ else:
+ return subprocess.check_output(self._command + cmd,
+ stderr=subprocess.STDOUT,
+ **kwargs).decode('utf-8')
+
def inspect_tag(self, tag):
try: