[documentation] adding docstring to all the methods.

pylot/core/util/pdf.py

@@ -363,13 +363,15 @@ class ProbabilityDensityFunction(object):
         return m
 
     def quantile_distance(self, prob_value):
+        if 0 >= prob_value or prob_value >= 0.5:
+            raise ValueError('Value out of range.')
         ql = self.quantile(prob_value)
         qu = self.quantile(1 - prob_value)
         return qu - ql
 
 
     def qtile_dist_quot(self,x):
-        if x <= 0 or x >= 0.5:
+        if x <= 0 or x >= 0.25:
             raise ValueError('Value out of range.')
         return self.quantile_distance(0.5-x)/self.quantile_distance(x)
 

pylot/core/util/utils.py

@@ -223,10 +223,10 @@ def getPatternLine(fn, pattern):
 
 def isSorted(iterable):
     '''
-
-    :param iterable:
-    :type iterable:
-    :return:
+    Takes an iterable and checks if args* are in order.
+    :param iterable: any with defined __ls__() and __gs__()
+    :type iterable: list
+    :return: Boolean
     '''
     return sorted(iterable) == iterable