Repair no import csv

Ascotbe · Ascotbe · commit be5d0049e6ab · 2022-09-21T10:42:31.000+08:00
diff --git a/source/c06/p01_read_write_csv_data.rst b/source/c06/p01_read_write_csv_data.rst
@@ -42,6 +42,7 @@
 .. code-block:: python
 
     from collections import namedtuple
+    import csv
     with open('stock.csv') as f:
         f_csv = csv.reader(f)
         headings = next(f_csv)
