X-Git-Url: https://wannabe.guru.org/gitweb/?a=blobdiff_plain;f=type%2Frate.py;h=58489061570ab3a1a6f96728c04361ad760e21d1;hb=532df2c5b57c7517dfb3dddd8c1358fbadf8baf3;hp=64a472650242f863e24a02cd03cb44344db10a76;hpb=6ba90a1f30f1c0cf4df12fcd0c62181f29bc3668;p=python_utils.git

diff --git a/type/rate.py b/type/rate.py
index 64a4726..5848906 100644
--- a/type/rate.py
+++ b/type/rate.py
@@ -1,9 +1,15 @@
 #!/usr/bin/env python3
 
+# © Copyright 2021-2022, Scott Gasch
+
+"""A class to represent a rate of change."""
+
 from typing import Optional
 
 
 class Rate(object):
+    """A class to represent a rate of change."""
+
     def __init__(
         self,
         multiplier: Optional[float] = None,
@@ -28,9 +34,7 @@ class Rate(object):
             self.multiplier = 1.0 + percent_change / 100
             count += 1
         if count != 1:
-            raise Exception(
-                'Exactly one of percentage, percent_change or multiplier is required.'
-            )
+            raise Exception('Exactly one of percentage, percent_change or multiplier is required.')
 
     def apply_to(self, other):
         return self.__mul__(other)