python: remove more instances of sys.version_info

We guarantee 3.5+ everywhere; remove more dead checks. In general, try
to avoid using version checks and instead prefer to attempt behavior
when possible.

Signed-off-by: John Snow <jsnow@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Message-Id: <20200514035230.25756-1-jsnow@redhat.com>
Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com>

2 files changed, 4 insertions, 6 deletions

diff --git a/tests/docker/docker.py b/tests/docker/docker.py
index d8268c1111..5a9735db78 100755
--- a/tests/docker/docker.py
+++ b/tests/docker/docker.py
@@ -258,12 +258,13 @@ class Docker(object):
         return self._do_kill_instances(True)
 
     def _output(self, cmd, **kwargs):
-        if sys.version_info[1] >= 6:
+        try:
             return subprocess.check_output(self._command + cmd,
                                            stderr=subprocess.STDOUT,
                                            encoding='utf-8',
                                            **kwargs)
-        else:
+        except TypeError:
+            # 'encoding' argument was added in 3.6+
             return subprocess.check_output(self._command + cmd,
                                            stderr=subprocess.STDOUT,
                                            **kwargs).decode('utf-8')
diff --git a/tests/qemu-iotests/nbd-fault-injector.py b/tests/qemu-iotests/nbd-fault-injector.py
index 588d62aebf..78f42c4214 100755
--- a/tests/qemu-iotests/nbd-fault-injector.py
+++ b/tests/qemu-iotests/nbd-fault-injector.py
@@ -47,10 +47,7 @@ import sys
 import socket
 import struct
 import collections
-if sys.version_info.major >= 3:
-    import configparser
-else:
-    import ConfigParser as configparser
+import configparser
 
 FAKE_DISK_SIZE = 8 * 1024 * 1024 * 1024 # 8 GB