parameters: (args=None, values=None)
return_statement: return opts, options.verbose
docstring: Define and parse `optparse` options for command-line usage.
docstring_summary: Define and parse `optparse` options for command-line usage.
docstring_tokens: Define and parse optparse options for command - line usage .
function: def parse_options(args=None, values=None):
      """
      Define and parse `optparse` options for command-line usage.
      """
      usage = """%prog [options] [INPUTFILE]
         (STDIN is assumed if no INPUTFILE is given)"""
      desc = "A Python implementation of John Gruber's Markdown. " \
             "https://pythonhosted.org/Markdown/"
      ver = "%%prog %s" % markdown.version
  
      parser = optparse.OptionParser(usage=usage, description=desc, version=ver)
      parser.add_option("-f", "--file", dest="filename", default=None,
                        help="Write output to OUTPUT_FILE. Defaults to STDOUT.",
                        metavar="OUTPUT_FILE")
      parser.add_option("-e", "--encoding", dest="encoding",
                        help="Encoding for input and output files.",)
      parser.add_option("-s", "--safe", dest="safe", default=False,
                        metavar="SAFE_MODE",
                        help="Deprecated! 'replace', 'remove' or 'escape' HTML "
                        "tags in input")
      parser.add_option("-o", "--output_format", dest="output_format",
                        default='xhtml1', metavar="OUTPUT_FORMAT",
                        help="'xhtml1' (default), 'html4' or 'html5'.")
      parser.add_option("-n", "--no_lazy_ol", dest="lazy_ol",
                        action='store_false', default=True,
                        help="Observe number of first item of ordered lists.")
      parser.add_option("-x", "--extension", action="append", dest="extensions",
                        help="Load extension EXTENSION.", metavar="EXTENSION")
      parser.add_option("-c", "--extension_configs",
                        dest="configfile", default=None,
                        help="Read extension configurations from CONFIG_FILE. "
                        "CONFIG_FILE must be of JSON or YAML format. YAML"
                        "format requires that a python YAML library be "
                        "installed. The parsed JSON or YAML must result in a "
                        "python dictionary which would be accepted by the "
                        "'extension_configs' keyword on the markdown.Markdown "
                        "class. The extensions must also be loaded with the "
                        "`--extension` option.",
                        metavar="CONFIG_FILE")
      parser.add_option("-q", "--quiet", default=CRITICAL,
                        action="store_const", const=CRITICAL+10, dest="verbose",
                        help="Suppress all warnings.")
      parser.add_option("-v", "--verbose",
                        action="store_const", const=WARNING, dest="verbose",
                        help="Print all warnings.")
      parser.add_option("--noisy",
                        action="store_const", const=DEBUG, dest="verbose",
                        help="Print debug messages.")
  
      (options, args) = parser.parse_args(args, values)
  
      if len(args) == 0:
          input_file = None
      else:
          input_file = args[0]
  
      if not options.extensions:
          options.extensions = []
  
      extension_configs = {}
      if options.configfile:
          with codecs.open(
              options.configfile, mode="r", encoding=options.encoding
          ) as fp:
              try:
                  extension_configs = yaml.load(fp)
              except Exception as e:
                  message = "Failed parsing extension config file: %s" % \
                            options.configfile
                  e.args = (message,) + e.args[1:]
                  raise
  
      opts = {
          'input': input_file,
          'output': options.filename,
          'extensions': options.extensions,
          'extension_configs': extension_configs,
          'encoding': options.encoding,
          'output_format': options.output_format,
          'lazy_ol': options.lazy_ol
      }
  
      if options.safe:
          # Avoid deprecation warning if user didn't set option
          opts['safe_mode'] = options.safe
  
      return opts, options.verbose
function_tokens: def parse_options ( args = None , values = None ) : usage = """%prog [options] [INPUTFILE]
         (STDIN is assumed if no INPUTFILE is given)""" desc = "A Python implementation of John Gruber's Markdown. " "https://pythonhosted.org/Markdown/" ver = "%%prog %s" % markdown . version parser = optparse . OptionParser ( usage = usage , description = desc , version = ver ) parser . add_option ( "-f" , "--file" , dest = "filename" , default = None , help = "Write output to OUTPUT_FILE. Defaults to STDOUT." , metavar = "OUTPUT_FILE" ) parser . add_option ( "-e" , "--encoding" , dest = "encoding" , help = "Encoding for input and output files." , ) parser . add_option ( "-s" , "--safe" , dest = "safe" , default = False , metavar = "SAFE_MODE" , help = "Deprecated! 'replace', 'remove' or 'escape' HTML " "tags in input" ) parser . add_option ( "-o" , "--output_format" , dest = "output_format" , default = 'xhtml1' , metavar = "OUTPUT_FORMAT" , help = "'xhtml1' (default), 'html4' or 'html5'." ) parser . add_option ( "-n" , "--no_lazy_ol" , dest = "lazy_ol" , action = 'store_false' , default = True , help = "Observe number of first item of ordered lists." ) parser . add_option ( "-x" , "--extension" , action = "append" , dest = "extensions" , help = "Load extension EXTENSION." , metavar = "EXTENSION" ) parser . add_option ( "-c" , "--extension_configs" , dest = "configfile" , default = None , help = "Read extension configurations from CONFIG_FILE. " "CONFIG_FILE must be of JSON or YAML format. YAML" "format requires that a python YAML library be " "installed. The parsed JSON or YAML must result in a " "python dictionary which would be accepted by the " "'extension_configs' keyword on the markdown.Markdown " "class. The extensions must also be loaded with the " "`--extension` option." , metavar = "CONFIG_FILE" ) parser . add_option ( "-q" , "--quiet" , default = CRITICAL , action = "store_const" , const = CRITICAL + 10 , dest = "verbose" , help = "Suppress all warnings." ) parser . add_option ( "-v" , "--verbose" , action = "store_const" , const = WARNING , dest = "verbose" , help = "Print all warnings." ) parser . add_option ( "--noisy" , action = "store_const" , const = DEBUG , dest = "verbose" , help = "Print debug messages." ) ( options , args ) = parser . parse_args ( args , values ) if len ( args ) == 0 : input_file = None else : input_file = args [ 0 ] if not options . extensions : options . extensions = [ ] extension_configs = { } if options . configfile : with codecs . open ( options . configfile , mode = "r" , encoding = options . encoding ) as fp : try : extension_configs = yaml . load ( fp ) except Exception as e : message = "Failed parsing extension config file: %s" % options . configfile e . args = ( message , ) + e . args [ 1 : ] raise opts = { 'input' : input_file , 'output' : options . filename , 'extensions' : options . extensions , 'extension_configs' : extension_configs , 'encoding' : options . encoding , 'output_format' : options . output_format , 'lazy_ol' : options . lazy_ol } if options . safe : # Avoid deprecation warning if user didn't set option opts [ 'safe_mode' ] = options . safe return opts , options . verbose