Clean up transform code

transform.py

@@ -1,26 +1,27 @@
+import optparse
 import sys
+
 from docutils.core import publish_parts
-from optparse import OptionParser
-from docutils.frontend import OptionParser as DocutilsOptionParser
+from docutils.frontend import OptionParser
 from docutils.parsers.rst import Parser
 
+
 def transform(writer=None, part=None):
-    p = OptionParser(add_help_option=False)
-    
+    p = optparse.OptionParser(add_help_option=False)
+
     # Collect all the command line options
-    docutils_parser = DocutilsOptionParser(components=(writer, Parser()))
+    docutils_parser = OptionParser(components=(writer, Parser()))
+
     for group in docutils_parser.option_groups:
         p.add_option_group(group.title, None).add_options(group.option_list)
-    
+
     p.add_option('--part', default=part)
-    
+
     opts, args = p.parse_args()
-    
-    settings = dict({
-        'file_insertion_enabled': False,
-        'raw_enabled': False,
-    }, **opts.__dict__)
-    
+
+    settings = dict({'file_insertion_enabled': False,
+                     'raw_enabled': False}, **opts.__dict__)
+
     if len(args) == 1:
         try:
             content = open(args[0], 'r').read()
@@ -28,13 +29,10 @@ def transform(writer=None, part=None):
             content = args[0]
     else:
         content = sys.stdin.read()
-    
-    parts = publish_parts(
-        source=content,
-        settings_overrides=settings,
-        writer=writer,
-    )
-    
+
+    parts = publish_parts(source=content, settings_overrides=settings,
+                          writer=writer)
+
     if opts.part in parts:
         return parts[opts.part]
-    return ''
+    return ''