1 files changed, 10 insertions, 0 deletions

diff --git a/glucometer.py b/glucometer.py
index dc5d78b..19a47a8 100755
--- a/glucometer.py
+++ b/glucometer.py
@@ -9,6 +9,7 @@ __license__ = 'MIT'
 
 import argparse
 import importlib
+import inspect
 import logging
 import sys
 
@@ -35,6 +36,9 @@ def main():
           'https://docs.python.org/3/library/logging.html#logging-levels'))
 
   subparsers.add_parser(
+    'help', help=('Display a description of the driver, including supported '
+                  'features and known quirks.'))
+  subparsers.add_parser(
     'info', help='Display information about the meter.')
   subparsers.add_parser(
     'zero', help='Zero out the data log of the meter.')
@@ -67,6 +71,12 @@ def main():
       args.driver)
     return 1
 
+  # This check needs to happen before we try to initialize the device, as the
+  # help action does not require a --device at all.
+  if args.action == 'help':
+    print(inspect.getdoc(driver))
+    return 0
+
   device = driver.Device(args.device)
 
   device.connect()