2 files changed, 7 insertions, 3 deletions

diff --git a/glucometer.py b/glucometer.py
index 8e19237..148daff 100755
--- a/glucometer.py
+++ b/glucometer.py
@@ -76,9 +76,7 @@ def main():
           readings, key=lambda reading: getattr(reading, args.sort_by))
 
       for reading in readings:
-        print('"%s","%.2f","%s","%s"' % (
-          reading.timestamp, reading.get_value_as(unit),
-          reading.meal, reading.comment))
+        print(reading.as_csv(unit))
     elif args.action == 'datetime':
       if args.set == 'now':
         print(device.set_datetime())
diff --git a/glucometerutils/common.py b/glucometerutils/common.py
index 1e7e7f8..ac5c931 100644
--- a/glucometerutils/common.py
+++ b/glucometerutils/common.py
@@ -84,6 +84,12 @@ class Reading(_ReadingBase):
     """
     return convert_glucose_unit(self.value, UNIT_MGDL, to_unit)
 
+  def as_csv(self, unit):
+    """Returns the reading as a formatted comma-separated value string."""
+    return '"%s","%.2f","%s","%s"' % (
+      self.timestamp, self.get_value_as(unit), self.meal, self.comment)
+
+
 _MeterInfoBase = collections.namedtuple(
   '_MeterInfoBase', ['model', 'serial_number', 'version_info', 'native_unit'])