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-rw-r--r--type/rate.py8
1 files changed, 5 insertions, 3 deletions
diff --git a/type/rate.py b/type/rate.py
index 64a4726..c365848 100644
--- a/type/rate.py
+++ b/type/rate.py
@@ -1,9 +1,13 @@
#!/usr/bin/env python3
+"""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 +32,7 @@ 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)