tidied up linting

gusto/numerical_integrator.py

@@ -4,9 +4,11 @@
 class NumericalIntegral(object):
     """
     A class for numerically evaluating and tabulating some 1D integral.
-    :arg lower_bound: lower bound of integral
-    :arg upper_bound: upper_bound of integral
-    :arg num_points:  number of points to tabulate integral at
+    Args:
+        lower_bound(float): lower bound of integral
+        upper_bound(float): upper bound of integral
+        num_points(float): number of points to tabulate integral at
+
     """
     def __init__(self, lower_bound, upper_bound, num_points=500):
 
@@ -22,8 +24,9 @@ def __init__(self, lower_bound, upper_bound, num_points=500):
     def tabulate(self, expression):
         """
         Tabulate some integral expression using Simpson's rule.
-        :arg expression: a function representing the integrand to be evaluated.
-                         Should take a numpy array as an argument.
+        Args:
+            expression (func): a function representing the integrand to be 
+                evaluated. should take a numpy array as an argument.
         """
 
         self.cumulative = np.zeros_like(self.x)
@@ -45,8 +48,9 @@ def tabulate(self, expression):
     def evaluate_at(self, points):
         """
         Evaluates the integral at some point using linear interpolation.
-        :arg points: the point value, or array of point values to evaluate
-                     the integral at.
+        Args:
+            points (float or iter) the point value, or array of point values to 
+                evaluate the integral at.
         """
         # Do linear interpolation from tabulated values
         if not self.tabulated: