Change unnecessary user=None in args to empty string and remove check.

1 files changed, 1 insertions, 4 deletions

diff --git a/docker/client.py b/docker/client.py
index 7bdb464..74c33a2 100644
--- a/docker/client.py
+++ b/docker/client.py
@@ -521,7 +521,7 @@ class Client(requests.Session):
         return self.exec_start(create_res, detach, tty, stream)
 
     def exec_create(self, container, cmd, stdout=True, stderr=True, tty=False,
-                    privileged=False, user=None):
+                    privileged=False, user=''):
         if utils.compare_version('1.15', self._version) < 0:
             raise errors.InvalidVersion('Exec is not supported in API < 1.15')
         if privileged and utils.compare_version('1.19', self._version) < 0:
@@ -535,9 +535,6 @@ class Client(requests.Session):
         if isinstance(cmd, six.string_types):
             cmd = shlex.split(str(cmd))
 
-        if user is None:
-            user = ''
-
         data = {
             'Container': container,
             'User': user,