Expand env-id format

README.rst

@@ -264,6 +264,8 @@ You can also run tests in a specific directory by using the ``-s`` option, or by
 What's new
 ----------
 
+- 2016-10-31: We're experimentally expanding the environment ID format
+  to include an optional username.
 - 2016-09-21: Switch the Gym automated logger setup to configure the
   root logger rather than just the 'gym' logger.
 - 2016-08-17: Calling `close` on an env will also close the monitor

gym/envs/registration.py

@@ -7,7 +7,11 @@
 
 logger = logging.getLogger(__name__)
 # This format is true today, but it's *not* an official spec.
-env_id_re = re.compile(r'^([\w:-]+)-v(\d+)$')
+# [username/](env-name)-v(version)    env-name is group 1, version is group 2
+#
+# 2016-10-31: We're experimentally expanding the environment ID format
+# to include an optional username.
+env_id_re = re.compile(r'^(?:[\w:-]+\/)?([\w:-]+)-v(\d+)$')
 
 def load(name):
     entry_point = pkg_resources.EntryPoint.parse('x={}'.format(name))
@@ -43,7 +47,7 @@ def __init__(self, id, entry_point=None, timestep_limit=1000, trials=100, reward
         self.reward_threshold = reward_threshold
         # Environment properties
         self.nondeterministic = nondeterministic
-        
+
         if tags is None:
             tags = {}
         self.tags = tags