diff --git a/gallery_dl/__init__.py b/gallery_dl/__init__.py
index af773d6a..a4317e11 100644
--- a/gallery_dl/__init__.py
+++ b/gallery_dl/__init__.py
@@ -1,6 +1,6 @@
 # -*- coding: utf-8 -*-
 
-# Copyright 2014-2017 Mike Fährmann
+# Copyright 2014-2018 Mike Fährmann
 #
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License version 2 as
@@ -28,6 +28,7 @@ log = logging.getLogger("gallery-dl")
 
 
 def initialize_logging(loglevel, formatter):
+    """Setup basic logging functionality before configfiles have been loaded"""
     # convert levelnames to lowercase
     for level in (10, 20, 30, 40, 50):
         name = logging.getLevelName(level)
@@ -41,6 +42,7 @@ def initialize_logging(loglevel, formatter):
 
 
 def progress(urls, pformat):
+    """Wrapper around urls to output a simple progress indicator"""
     if pformat is True:
         pformat = "[{current}/{total}] {url}"
     pinfo = {"total": len(urls)}
@@ -50,6 +52,7 @@ def progress(urls, pformat):
 
 
 def sanatize_input(file):
+    """Filter and strip strings from an input file"""
     for line in file:
         line = line.strip()
         if line:
@@ -110,13 +113,15 @@ def main():
         if args.loglevel >= logging.ERROR:
             config.set(("output", "mode"), "null")
         elif args.loglevel <= logging.DEBUG:
-            import platform, requests
+            import platform
+            import requests
             log.debug("Version %s", __version__)
             log.debug("Python %s - %s",
                       platform.python_version(), platform.platform())
             try:
-                log.debug("requests %s", requests.__version__)
-                log.debug("urllib3 %s", requests.packages.urllib3.__version__)
+                log.debug("requests %s - urllib3 %s",
+                          requests.__version__,
+                          requests.packages.urllib3.__version__)
             except AttributeError:
                 pass
 
@@ -157,14 +162,15 @@ def main():
                         file = sys.stdin
                     else:
                         file = open(args.inputfile)
-
                     urls += sanatize_input(file)
+                    file.close()
                 except OSError as exc:
                     log.warning("input-file: %s", exc)
 
             if args.unsupportedfile:
                 try:
-                    job.Job.ufile = open(args.unsupportedfile, "w")
+                    path = util.expand_path(args.unsupportedfile)
+                    job.Job.ufile = open(path, "w")
                 except OSError as exc:
                     log.warning("unsupported-URL file: %s", exc)
 
diff --git a/gallery_dl/option.py b/gallery_dl/option.py
index 29e3c9dc..e509e0ac 100644
--- a/gallery_dl/option.py
+++ b/gallery_dl/option.py
@@ -1,6 +1,6 @@
 # -*- coding: utf-8 -*-
 
-# Copyright 2017 Mike Fährmann
+# Copyright 2017-2018 Mike Fährmann
 #
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License version 2 as
@@ -13,8 +13,6 @@ import logging
 import json
 from .version import __version__
 
-log = logging.getLogger("option")
-
 
 class ConfigAction(argparse.Action):
     """Set argparse results as config values"""
@@ -31,16 +29,13 @@ class ConfigConstAction(argparse.Action):
 class ParseAction(argparse.Action):
     """Parse <key>=<value> options and set them as config values"""
     def __call__(self, parser, namespace, values, option_string=None):
+        key, _, value = values.partition("=")
         try:
-            key, _, value = values.partition("=")
-            try:
-                value = json.loads(value)
-            except ValueError:
-                pass
-            key = key.split(".")
-            namespace.options.append((key, value))
+            value = json.loads(value)
         except ValueError:
-            log.warning("Invalid '<key>=<value>' pair: %s", values)
+            pass
+        key = key.split(".")
+        namespace.options.append((key, value))
 
 
 class Formatter(argparse.HelpFormatter):