Additional cmd line examples (#377)

Adding command line examples to the Quick Start Guide tutorial

tutorials/Resources/exploration.py

@@ -0,0 +1,39 @@
+
+import numpy as np
+from typing import List
+from rl_coach.core_types import ActionType
+from rl_coach.spaces import ActionSpace
+from rl_coach.exploration_policies.exploration_policy import ExplorationPolicy, ExplorationParameters
+
+
+class MyExplorationPolicy(ExplorationPolicy):
+    """
+    An exploration policy takes the predicted actions or action values from the agent, and selects the action to
+    actually apply to the environment using some predefined algorithm.
+    """
+    def __init__(self, action_space: ActionSpace):
+        #self.phase = RunPhase.HEATUP
+        self.action_space = action_space
+        super().__init__(action_space)
+
+    def get_action(self, action_values: List[ActionType]) -> ActionType:
+        if (np.random.rand() < 0.5):
+            chosen_action = self.action_space.sample()
+        else:
+            chosen_action = np.argmax(action_values)
+        probabilities = np.zeros(len(self.action_space.actions))
+        probabilities[chosen_action] = 1
+        return chosen_action, probabilities
+
+    def get_control_param(self):
+        return 0
+
+
+
+class MyExplorationParameters(ExplorationParameters):
+    def __init__(self):
+        super().__init__()
+
+    @property
+    def path(self):
+        return 'exploration:MyExplorationPolicy'