ex3.1 b

stock.py

@@ -1,3 +1,6 @@
+import csv
+
+
 class Stock:
     def __init__(self, name, shares, price):
         self.name = name
@@ -11,3 +14,10 @@ class Stock:
         self.shares -= num
         if self.shares < 0:
             self.shares = 0
+
+
+def read_portfolio(filename):
+    with open(filename) as f:
+        rows = csv.reader(f)
+        _ = next(rows)
+        return [Stock(row[0], row[1], row[2]) for row in rows]