hw3 106062515

gym/__init__.py

@@ -0,0 +1,56 @@
+import distutils.version
+import logging
+import os
+import sys
+
+from gym import error
+from gym.configuration import logger_setup, undo_logger_setup
+from gym.utils import reraise
+from gym.version import VERSION as __version__
+
+logger = logging.getLogger(__name__)
+
+# Do this before importing any other gym modules, as most of them import some
+# dependencies themselves.
+def sanity_check_dependencies():
+    import numpy
+    import requests
+    import six
+
+    if distutils.version.LooseVersion(numpy.__version__) < distutils.version.LooseVersion('1.10.4'):
+        logger.warn("You have 'numpy' version %s installed, but 'gym' requires at least 1.10.4. HINT: upgrade via 'pip install -U numpy'.", numpy.__version__)
+
+    if distutils.version.LooseVersion(requests.__version__) < distutils.version.LooseVersion('2.0'):
+        logger.warn("You have 'requests' version %s installed, but 'gym' requires at least 2.0. HINT: upgrade via 'pip install -U requests'.", requests.__version__)
+
+# We automatically configure a logger with a simple stderr handler. If
+# you'd rather customize logging yourself, run undo_logger_setup.
+#
+# (Note: this code runs before importing the rest of gym, since we may
+# print a warning at load time.)
+#
+# It's generally not best practice to configure the logger in a
+# library. We choose to do so because, empirically, many of our users
+# are unfamiliar with Python's logging configuration, and never find
+# their way to enabling our logging. Users who are aware of how to
+# configure Python's logging do have to accept a bit of incovenience
+# (generally by caling `gym.undo_logger_setup()`), but in exchange,
+# the library becomes much more usable for the uninitiated.
+#
+# Gym's design goal generally is to be simple and intuitive, and while
+# the tradeoff is definitely not obvious in this case, we've come down
+# on the side of auto-configuring the logger.
+
+if not os.environ.get('GYM_NO_LOGGER_SETUP'):
+    logger_setup()
+del logger_setup
+
+sanity_check_dependencies()
+
+from gym.core import Env, Space, Wrapper, ObservationWrapper, ActionWrapper, RewardWrapper
+from gym.benchmarks import benchmark_spec
+from gym.envs import make, spec
+from gym.scoreboard.api import upload
+from gym import wrappers
+
+__all__ = ["Env", "Space", "Wrapper", "make", "spec", "upload", "wrappers"]