Cleaned up argument parsing

novel_stats/novel_stats.py

@@ -1,10 +1,9 @@
 #!/usr/bin/python
 
 
-import collections
-import sys
-import tempfile
 import argparse
+import collections
+import tempfile
 
 CHAPTER_MARKER = '## '
 STATUS_MARKER = '[status]: # '
@@ -28,13 +27,30 @@ def count_words(line):
 def main():
     # Better argument parsing
     parser = argparse.ArgumentParser()
-    parser.add_argument('-c', '--chapter', action='store_true')
-    parser.add_argument('-a', '--act', action='store_true')
-    parser.add_argument('-pp', action='store_true')
-    parser.add_argument('filename')
+    parser.add_argument(
+        '-c',
+        '--chapter',
+        action='store_true',
+        help='output chapter-by-chapter breakdown of word counts, including how many words in each chapter are tagged with which status',
+    )
+    parser.add_argument(
+        '-a',
+        '--act',
+        action='store_true',
+        help='output act-by-act breakdown of word counts (total only)',
+    )
+    parser.add_argument(
+        '-pp',
+        action='store_true',
+        help='run markdown pre-processor, this allows for a multi-file input (e.g. each chapter in its own file), but requires the MarkdownPP python library',
+    )
+    parser.add_argument(
+        'markdown_file',
+        type=argparse.FileType('r'),
+        help='The markdown file for the novel, main file if a multi-file novel',
+    )
     arguments = parser.parse_args()
 
-    filename = arguments.filename
     mdfile = None
 
     if arguments.pp:
@@ -43,10 +59,12 @@ def main():
         import MarkdownPP
 
         mdfile = tempfile.TemporaryFile(mode='w+')
-        MarkdownPP.MarkdownPP(input=open(filename), output=mdfile, modules=list(MarkdownPP.modules))
+        MarkdownPP.MarkdownPP(
+            input=arguments.markdown_file, output=mdfile, modules=list(MarkdownPP.modules)
+        )
         mdfile.seek(0)
     else:
-        mdfile = open(filename)
+        mdfile = arguments.markdown_file
 
     chapter_heading = None
     act_heading = None