<s> import sys , re , operator , string , inspect <EOL> def extract_words ( path_to_file ) : <EOL> """<STR_LIT>""" <EOL> fail = False <EOL> word_list = [ ] <EOL> if type ( path_to_file ) is str and path_to_file : <EOL> try : <EOL> with open ( path_to_file ) as f : <EOL> str_data = f . read ( ) <EOL> except IOError as e : <EOL> print "<STR_LIT>" . format ( e . errno , path_to_file , e . strerror ) <EOL> fail = True <EOL> if not fail : <EOL> pattern = re . compile ( '<STR_LIT>' ) <EOL> word_list = pattern . sub ( '<STR_LIT:U+0020>' , str_data ) . lower ( ) . split ( ) <EOL> try : <EOL> with open ( '<STR_LIT>' ) as f : <EOL> stop_words = f . read ( ) . split ( '<STR_LIT:U+002C>' ) <EOL> except IOError as e : <EOL> print "<STR_LIT>" . format ( e . errno , e . strerror ) <EOL> fail = True <EOL> if not fail : <EOL> stop_words . extend ( list ( string . ascii_lowercase ) ) <EOL> return [ w for w in word_list if not w in stop_words ] if not fail else [ ] <EOL> def frequencies ( word_list ) : <EOL> """<STR_LIT>""" <EOL> if type ( word_list ) is list and word_list < > [ ] : <EOL> word_freqs = { } <EOL> for w in word_list : <EOL> if w in word_freqs : <EOL> word_freqs [ w ] += <NUM_LIT:1> <EOL> else : <EOL> word_freqs [ w ] = <NUM_LIT:1> <EOL> return word_freqs <EOL> else : <EOL> return { } <EOL> def sort ( word_freq ) : <EOL> """<STR_LIT>""" <EOL> if type ( word_freq ) is dict and word_freq < > { } : <EOL> return sorted ( word_freq . iteritems ( ) , key = operator . itemgetter ( <NUM_LIT:1> ) , reverse = True ) <EOL> else : <EOL> return [ ] <EOL> filename = sys . argv [ <NUM_LIT:1> ] if len ( sys . argv ) > <NUM_LIT:1> else "<STR_LIT>" <EOL> word_freqs = sort ( frequencies ( extract_words ( filename ) ) ) <EOL> for tf in word_freqs [ <NUM_LIT:0> : <NUM_LIT> ] : <EOL> print tf [ <NUM_LIT:0> ] , '<STR_LIT>' , tf [ <NUM_LIT:1> ] </s>
