June 2018
Intermediate to advanced
546 pages
13h 30m
English
As we have lots of code that is supposed to work with OpenAI Gym, we’ll implement the trading functionality following Gym’s Env class API, which should be familiar to you. Our environment is implemented in the StocksEnv class in the Chapter08/lib/environ.py module. It uses several internal classes to keep its state and encode observations. Let’s first look at the public API class.
class Actions(enum.Enum):
Skip = 0
Buy = 1
Close = 2We encode all available actions as an enumerator’s fields. We support a very simple set of actions with only three options: do nothing, buy a single share, and close the existing position.
class StocksEnv(gym.Env):
metadata = {‘render.modes’: [‘human’]}This metadata field is required the for