From 80976ba906eb78266a2955d4838a6ab372195694 Mon Sep 17 00:00:00 2001
From: Mike Bloy <mike@bloy.org>
Date: Fri, 27 Oct 2023 16:36:28 -0500
Subject: [PATCH] ex 3.1 a

---
 stock.py | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/stock.py b/stock.py
index 134d200..1fb01ca 100644
--- a/stock.py
+++ b/stock.py
@@ -1,4 +1,3 @@
-
 class Stock:
     def __init__(self, name, shares, price):
         self.name = name
@@ -7,3 +6,8 @@ class Stock:
 
     def cost(self):
         return self.shares * self.price
+
+    def sell(self, num):
+        self.shares -= num
+        if self.shares < 0:
+            self.shares = 0