finished refactor streak, fixed bug from last commit. closes #3.

coub-dl.py

@@ -160,7 +160,8 @@ def check_for_ytdl_and_ffmpeg():
         print_opt(error_str.format('youtube-dl'))
     elif not ffmpeg_found:
         print_opt(error_str.format('ffmpeg'))
-    exit()
+
+    if not ytdl_found or not ffmpeg_found: exit()
 
 
 def determine_output_filename(url, user_supplied, extension, files_dict):
@@ -171,6 +172,12 @@ def determine_output_filename(url, user_supplied, extension, files_dict):
     files_dict[File.OUTPUT] += extension
 
 
+def build_default_files_dict():
+     return {Stream.AUDIO: 'audio', Stream.VIDEO: 'video',
+             File.LIST: 'list.txt', File.LOOP: 'loop', File.FRACTION: 'fraction',
+             File.OUTPUT: ''}, [File.OUTPUT]
+
+
 def parse_cmd_arguments():
     parser = ArgumentParser(description='Download player-looped videos with youtube-dl & ffmpeg.')
     parser.add_argument('-nv', '--nonverbose', action='store_true', help='Turn off non-critical messages to user')
@@ -225,10 +232,7 @@ if __name__ == '__main__':
     check_for_ytdl_and_ffmpeg()
 
     # create dict that contains files used
-    FILES = {Stream.AUDIO: 'audio', Stream.VIDEO: 'video',
-             File.LIST: 'list.txt', File.LOOP: 'loop', File.FRACTION: 'fraction',
-             File.OUTPUT: 'output'+args.extension}
-    OUTPUT_KEYS = [File.OUTPUT]
+    FILES, OUTPUT_KEYS = build_default_files_dict()
     URL = args.url
 
     determine_output_filename(URL, args.output, args.extension, FILES)