[lint] Add tool to run pylint on all files

pylint all *.py files and fix the errors reported so far.

bumblebee/config.py

@@ -1,22 +1,35 @@
+"""Configuration handling
+
+This module provides configuration information (loaded modules,
+module parameters, etc.) to all other components
+"""
+
 import argparse
 
 MODULE_HELP = ""
 
+def create_parser():
+    """Create the argument parser"""
+    parser = argparse.ArgumentParser(description="display system data in the i3bar")
+    parser.add_argument("-m", "--modules", nargs="+", default=[],
+                        help=MODULE_HELP)
+    return parser
+
 class Config(object):
-    def __init__(self, args = []):
-        parser = self._create_parser()
-        self._args = parser.parse_args(args)
+    """Top-level configuration class
+
+    Parses commandline arguments and provides non-module
+    specific configuration information.
+    """
+    def __init__(self, args=None):
+        parser = create_parser()
+        self._args = parser.parse_args(args if args else [])
 
     def modules(self):
-        return list(map(lambda x: {
+        """Return a list of all activated modules"""
+        return [{
             "module": x.split(":")[0],
-            "name": x if not ":" in x else x.split(":")[1]
-        }, self._args.modules))
-
-    def _create_parser(self):
-        parser = argparse.ArgumentParser(description="display system data in the i3bar")
-        parser.add_argument("-m", "--modules", nargs="+", default = [],
-            help = MODULE_HELP)
-        return parser
+            "name": x if not ":" in x else x.split(":")[1],
+        } for x in self._args.modules]
 
 # vim: tabstop=8 expandtab shiftwidth=4 softtabstop=4