1 files changed, 4 insertions, 1 deletions
diff --git a/histogram.py b/histogram.py
index c673e16..f85abea 100644
--- a/histogram.py
+++ b/histogram.py
@@ -1,8 +1,9 @@
 #!/usr/bin/env python3
 # -*- coding: utf-8 -*-
 
+"""A text-based simple histogram helper class."""
+
 import math
-from numbers import Number
 from typing import Dict, Generic, Iterable, List, Optional, Tuple, TypeVar
 
 T = TypeVar("T", int, float)
@@ -11,6 +12,8 @@ Count = int
 
 
 class SimpleHistogram(Generic[T]):
+    """A simple histogram."""
+
     # Useful in defining wide open bottom/top bucket bounds:
     POSITIVE_INFINITY = math.inf
     NEGATIVE_INFINITY = -math.inf