Get directory that log files are being written to. will be None if there is no output directory (i.e., if you didn't call start)

Log a dictionary of key-value pairs

Usage: @profile("my_func") def my_func(): code

path : a tensorboard file OR a directory, where we will find all TB files of the form events.*

Do no-op action for a number of steps in [1, noop_max].

Reset only when lives are exhausted. This way all states are still reachable even though lives are episodic, and the learner need not

Bin reward to {+1, 0, -1} by its sign.

Repeat action, sum reward, and max over last observations.