Do not use parenthesis when defining a class without inheritance

Signed-off-by: Olivier Gayot <olivier.gayot@sigexec.com>

1 files changed, 1 insertions, 1 deletions

diff --git a/pycameltris/piece.py b/pycameltris/piece.py
index aaeac66..2f3e7ce 100644
--- a/pycameltris/piece.py
+++ b/pycameltris/piece.py
@@ -14,7 +14,7 @@ yellow = (164, 164, 30)
 cyan = (30, 164, 150)
 
 
-class Piece():
+class Piece:
     def __init__(self):
         self.square = square_template.copy()