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error.py
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error.py
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import sys
class Error(Exception):
pass
# Local errors
class Unregistered(Error):
"""Raised when the user requests an item from the registry that does
not actually exist.
"""
pass
class UnregisteredEnv(Unregistered):
"""Raised when the user requests an env from the registry that does
not actually exist.
"""
pass
class UnregisteredBenchmark(Unregistered):
"""Raised when the user requests an env from the registry that does
not actually exist.
"""
pass
class DeprecatedEnv(Error):
"""Raised when the user requests an env from the registry with an
older version number than the latest env with the same name.
"""
pass
class UnseedableEnv(Error):
"""Raised when the user tries to seed an env that does not support
seeding.
"""
pass
class DependencyNotInstalled(Error):
pass
class UnsupportedMode(Exception):
"""Raised when the user requests a rendering mode not supported by the
environment.
"""
pass
class ResetNeeded(Exception):
"""When the monitor is active, raised when the user tries to step an
environment that's already done.
"""
pass
class ResetNotAllowed(Exception):
"""When the monitor is active, raised when the user tries to step an
environment that's not yet done.
"""
pass
class InvalidAction(Exception):
"""Raised when the user performs an action not contained within the
action space
"""
pass
# API errors
class APIError(Error):
def __init__(self, message=None, http_body=None, http_status=None,
json_body=None, headers=None):
super(APIError, self).__init__(message)
if http_body and hasattr(http_body, 'decode'):
try:
http_body = http_body.decode('utf-8')
except:
http_body = ('<Could not decode body as utf-8. '
'Please report to gym@openai.com>')
self._message = message
self.http_body = http_body
self.http_status = http_status
self.json_body = json_body
self.headers = headers or {}
self.request_id = self.headers.get('request-id', None)
def __unicode__(self):
if self.request_id is not None:
msg = self._message or "<empty message>"
return u"Request {0}: {1}".format(self.request_id, msg)
else:
return self._message
def __str__(self):
try: # Python 2
return unicode(self).encode('utf-8')
except NameError: # Python 3
return self.__unicode__()
class APIConnectionError(APIError):
pass
class InvalidRequestError(APIError):
def __init__(self, message, param, http_body=None,
http_status=None, json_body=None, headers=None):
super(InvalidRequestError, self).__init__(
message, http_body, http_status, json_body,
headers)
self.param = param
class AuthenticationError(APIError):
pass
class RateLimitError(APIError):
pass
# Video errors
class VideoRecorderError(Error):
pass
class InvalidFrame(Error):
pass
# Wrapper errors
class DoubleWrapperError(Error):
pass
class WrapAfterConfigureError(Error):
pass
class RetriesExceededError(Error):
pass
# Vectorized environments errors
class AlreadyPendingCallError(Exception):
"""
Raised when `reset`, or `step` is called asynchronously (e.g. with
`reset_async`, or `step_async` respectively), and `reset_async`, or
`step_async` (respectively) is called again (without a complete call to
`reset_wait`, or `step_wait` respectively).
"""
def __init__(self, message, name):
super(AlreadyPendingCallError, self).__init__(message)
self.name = name
class NoAsyncCallError(Exception):
"""
Raised when an asynchronous `reset`, or `step` is not running, but
`reset_wait`, or `step_wait` (respectively) is called.
"""
def __init__(self, message, name):
super(NoAsyncCallError, self).__init__(message)
self.name = name
class ClosedEnvironmentError(Exception):
"""
Trying to call `reset`, or `step`, while the environment is closed.
"""
pass