1 files changed, 7 insertions, 5 deletions
diff --git a/type/money.py b/type/money.py
index 39557aa..b84652b 100644
--- a/type/money.py
+++ b/type/money.py
@@ -1,8 +1,10 @@
 #!/usr/bin/env python3
 
+"""A class to represent money.  See also centcount.py"""
+
 import re
 from decimal import Decimal
-from typing import Optional, Tuple, TypeVar
+from typing import Optional, Tuple
 
 import math_utils
 
@@ -39,9 +41,9 @@ class Money(object):
         a = round(a, 2)
         s = f'{a:,.2f}'
         if self.currency is not None:
-            return '%s %s' % (s, self.currency)
+            return f'{s} {self.currency}'
         else:
-            return '$%s' % s
+            return f'${s}'
 
     def __pos__(self):
         return Money(amount=self.amount, currency=self.currency)
@@ -178,8 +180,8 @@ class Money(object):
     def __ge__(self, other):
         return self > other or self == other
 
-    def __hash__(self):
-        return self.__repr__
+    def __hash__(self) -> int:
+        return hash(self.__repr__)
 
     AMOUNT_RE = re.compile(r"^([+|-]?)(\d+)(\.\d+)$")
     CURRENCY_RE = re.compile(r"^[A-Z][A-Z][A-Z]$")