Source code for tensortrade.env.generic.components.observer

# Copyright 2020 The TensorTrade Authors.
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# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
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#     http://www.apache.org/licenses/LICENSE-2.0
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# Unless required by applicable law or agreed to in writing, software
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from abc import abstractmethod


import numpy as np

from gym.spaces import Space


from tensortrade.core.component import Component
from tensortrade.core.base import TimeIndexed


[docs]class Observer(Component, TimeIndexed): """A component to generate an observation at each step of an episode. """ registered_name = "observer" @property @abstractmethod def observation_space(self) -> Space: """The observation space of the `TradingEnv`. (`Space`, read-only) """ raise NotImplementedError()
[docs] @abstractmethod def observe(self, env: 'TradingEnv') -> np.array: """Gets the observation at the current step of an episode Parameters ---------- env: 'TradingEnv' The trading environment. Returns ------- `np.array` The current observation of the environment. """ raise NotImplementedError()
[docs] def reset(self): """Resets the observer.""" pass