Updated some python documentation

ale/drivers/__init__.py

@@ -21,7 +21,12 @@ drivers = dict(chain.from_iterable(inspect.getmembers(dmod, lambda x: inspect.is
 
 def load(label):
     """
-    Load label from
+    Attempt to load a given label from all possible drivers
+
+    Parameters
+    ----------
+    label : str
+               String path to the given label file
     """
     for name, driver in drivers.items():
         try:

ale/drivers/base.py

@@ -22,9 +22,25 @@ class Driver():
         self._file = file
 
     def __str__(self):
+        """
+        Returns a string representation of the class
+
+        Returns
+        -------
+        str
+            String representation of all attributes and methods of the class
+        """
         return str(self.to_dict())
 
     def is_valid(self):
+        """
+        Checks if the driver has an intrument id associated with it
+
+        Returns
+        -------
+        bool
+            True if an instrument_id is defined, False otherwise
+        """
         try:
             iid = self.instrument_id
             return True
@@ -32,10 +48,18 @@ class Driver():
             return False
 
     def to_dict(self):
+        """
+        Generates a dictionary of keys based on the attributes and methods assocated with
+        the driver and the required keys for the driver
+
+        Returns
+        -------
+        dict
+            Dictionary of key, attribute pairs
+        """
         keys = set(dir(self)) & self.required_keys
         return {p:getattr(self, p) for p in keys}
 
-
 class LineScanner(Driver):
     @property
     def name_model(self):