Setup asyncio command line output.

.envrc

@@ -0,0 +1,2 @@
+layout python3
+python setup.py develop

rflink/__main__.py

@@ -1,6 +1,45 @@
-"""Command line interface for rflink library."""
+"""Command line interface for rflink library.
+
+Usage:
+  rflink [--port=<port>, --baud=<baud>]
+  rflink (-h | --help)
+  rflink --version
+
+Options:
+  -p --port=<port>  Serial port to connect to [default: /dev/ttyACM0].
+  --baud=<baud>     Serial baud rate [default: 57600].
+  -h --help         Show this screen.
+  --version         Show version.
+
+"""
+
+import asyncio
+
+import pkg_resources
+from docopt import docopt
+
+
+@asyncio.coroutine
+def output():
+    """Provide output to console."""
+    import itertools
+    counter = itertools.count()
+    while True:
+        print(next(counter))
+        yield from asyncio.sleep(1)
 
 
 def main():
     """Parse argument and setup main program loop."""
-    pass
+    arguments = docopt(__doc__, version=pkg_resources.require('rflink')[0].version)
+    print(arguments)
+    loop = asyncio.get_event_loop()
+    tasks = asyncio.gather(output())
+    try:
+        loop.run_until_complete(tasks)
+    except KeyboardInterrupt:
+        tasks.cancel()
+        loop.run_forever()
+        tasks.exception()
+    finally:
+        loop.close()

setup.cfg

@@ -1,5 +1,6 @@
 [pylama]
-linters = pydocstyle,pycodestyle,pyflakes,mccabe
+linters = pydocstyle,pycodestyle,pyflakes,mccabe,isort
+ignore = D213
 
 [pylama:pycodestyle]
-max-line-length = 100
+max_line_length = 100

setup.py

@@ -1,9 +1,10 @@
 """Library and CLI tools for interacting with RFlink 433MHz transceiver."""
 
-from setuptools import setup, find_packages
 from codecs import open
 from os import path
 
+from setuptools import find_packages, setup
+
 here = path.abspath(path.dirname(__file__))
 
 # Get the long description from the README file
@@ -50,7 +51,10 @@
 
     packages=find_packages(exclude=['contrib', 'docs', 'tests']),
 
-    # install_requires=[''],
+    install_requires=[
+        'docopt',
+        'pyserial-asyncio',
+    ],
 
     # # List additional groups of dependencies here (e.g. development
     # # dependencies). You can install these using the following syntax,

tox.ini

@@ -9,4 +9,6 @@ usedevelop = True
 
 [testenv:lint]
 commands = pylama setup.py rflink tests
-deps = pylama
+deps =
+  pylama
+  isort