def from_dict(dict_):
"""
INTERNAL
.. warning:: /!\\\\ Internal, do not use unless you know what you are doing /!\\\\
This is used internally only to restore action_space or observation_space if they
have been saved by `to_dict`. Do not
attempt to use it in a different context.
Allows the de-serialization of an object stored as a dictionary (for example in the case of json saving).
Parameters
----------
dict_: ``dict``
Representation of an BaseObservation Space (aka :class:`grid2op.BaseObservation.ObservartionHelper`)
or the BaseAction Space (aka :class:`grid2op.BaseAction.ActionSpace`)
as a dictionary.
Returns
-------
res: :class:`SerializableSpace`
An instance of an SerializableSpace matching the dictionary.
"""
if isinstance(dict_, str):
path = dict_
if not os.path.exists(path):
raise Grid2OpException(
"Unable to find the file \"{}\" to load the ObservationSpace"
.format(path))
with open(path, "r", encoding="utf-8") as f:
dict_ = json.load(fp=f)
gridobj = GridObjects.from_dict(dict_)
actionClass_str = extract_from_dict(dict_, "_init_subtype", str)
actionClass_li = actionClass_str.split('.')
if actionClass_li[-1] in globals():
subtype = globals()[actionClass_li[-1]]
else:
# TODO make something better and recursive here
exec("from {} import {}".format(".".join(actionClass_li[:-1]),
actionClass_li[-1]))
try:
subtype = eval(actionClass_li[-1])
except NameError:
if len(actionClass_li) > 1:
try:
subtype = eval(".".join(actionClass_li[1:]))
except:
msg_err_ = "Impossible to find the module \"{}\" to load back the space (ERROR 1). " \
"Try \"from {} import {}\""
raise Grid2OpException(
msg_err_.format(actionClass_str,
".".join(actionClass_li[:-1]),
actionClass_li[-1]))
else:
msg_err_ = "Impossible to find the module \"{}\" to load back the space (ERROR 2). " \
"Try \"from {} import {}\""
raise Grid2OpException(
msg_err_.format(actionClass_str,
".".join(actionClass_li[:-1]),
actionClass_li[-1]))
except AttributeError:
try:
subtype = eval(actionClass_li[-1])
except:
if len(actionClass_li) > 1:
msg_err_ = "Impossible to find the class named \"{}\" to load back the space (ERROR 3)" \
"(module is found but not the class in it) Please import it via " \
"\"from {} import {}\"."
msg_err_ = msg_err_.format(
actionClass_str, ".".join(actionClass_li[:-1]),
actionClass_li[-1])
else:
msg_err_ = "Impossible to import the class named \"{}\" to load back the space (ERROR 4) " \
"(the module is found but not the class in it)"
msg_err_ = msg_err_.format(actionClass_str)
raise Grid2OpException(msg_err_)
# create the proper SerializableSpace class for this environment
CLS = SerializableSpace.init_grid(gridobj)
res = CLS(gridobj=gridobj, subtype=subtype, _init_grid=True)
return res
def from_dict(dict_):
"""
Allows the de-serialization of an object stored as a dictionnary (for example in the case of json saving).
Parameters
----------
dict_: ``dict``
Representation of an BaseObservation Space (aka :class:`grid2op.BaseObservation.ObservartionHelper`)
or the BaseAction Space (aka :class:`grid2op.BaseAction.ActionSpace`)
as a dictionnary.
Returns
-------
res: :class:`SerializableSpace`
An instance of an SerializableSpace matching the dictionnary.
"""
if isinstance(dict_, str):
path = dict_
if not os.path.exists(path):
raise Grid2OpException(
"Unable to find the file \"{}\" to load the ObservationSpace"
.format(path))
with open(path, "r", encoding="utf-8") as f:
dict_ = json.load(fp=f)
gridobj = GridObjects.from_dict(dict_)
actionClass_str = extract_from_dict(dict_, "_init_subtype", str)
actionClass_li = actionClass_str.split('.')
if actionClass_li[-1] in globals():
subtype = globals()[actionClass_li[-1]]
else:
# TODO make something better and recursive here
exec("from {} import {}".format(".".join(actionClass_li[:-1]),
actionClass_li[-1]))
try:
subtype = eval(actionClass_li[-1])
except NameError:
if len(actionClass_li) > 1:
try:
subtype = eval(".".join(actionClass_li[1:]))
except:
msg_err_ = "Impossible to find the module \"{}\" to load back the space (ERROR 1). " \
"Try \"from {} import {}\""
raise Grid2OpException(
msg_err_.format(actionClass_str,
".".join(actionClass_li[:-1]),
actionClass_li[-1]))
else:
msg_err_ = "Impossible to find the module \"{}\" to load back the space (ERROR 2). " \
"Try \"from {} import {}\""
raise Grid2OpException(
msg_err_.format(actionClass_str,
".".join(actionClass_li[:-1]),
actionClass_li[-1]))
except AttributeError:
try:
subtype = eval(actionClass_li[-1])
except:
if len(actionClass_li) > 1:
msg_err_ = "Impossible to find the class named \"{}\" to load back the space (ERROR 3)" \
"(module is found but not the class in it) Please import it via " \
"\"from {} import {}\"."
msg_err_ = msg_err_.format(
actionClass_str, ".".join(actionClass_li[:-1]),
actionClass_li[-1])
else:
msg_err_ = "Impossible to import the class named \"{}\" to load back the space (ERROR 4) " \
"(the module is found but not the class in it)"
msg_err_ = msg_err_.format(actionClass_str)
raise Grid2OpException(msg_err_)
res = SerializableSpace(gridobj=gridobj, subtype=subtype)
return res