class Calculator:
# Constructor for the Calculator class
def __init__(self, filename):
self.parser = Parser(filename)
# Calculate Automatic Readability Index
def automated_readability_index(self):
return 4.71 * (float(self.parser.number_of_characters()) / float(self.parser.number_of_words())) \
+ 0.5 * (float(self.parser.number_of_words()) / float(self.parser.number_of_sentences())) - 21.43
# Calculate Gunning fog index
def gunning_fog_index(self):
return 0.4 * ((float(self.parser.number_of_words()) / float(self.parser.number_of_sentences()))
+ 100 * (float(self.parser.number_of_polysyllables()) / float(self.parser.number_of_words())))
# Calculate smog index
def smog_index(self):
return 1.0430 * sqrt(float(self.parser.number_of_polysyllables()) * 30.0 / float(self.parser.number_of_sentences()))\
+ 3.1291
# Calculate flesch reading ease
def flesch_reading_ease(self):
return 206.835 - 1.105 * (float(self.parser.number_of_words()) / float(self.parser.number_of_sentences())) - \
84.6 * (float(self.parser.number_of_syllables()) / float(self.parser.number_of_words()))
# Calculate Flesch Kincaid grade level
def flesch_kincaid_grade_level(self):
return (0.39 * float(self.parser.average_sentence_length())) + (11.8 * self.parser.average_syllable_per_word()) \
- 15.59
# Calculate Coleman Liau index
def coleman_liau_index(self):
return 0.0588 * (float(self.parser.average_letter_per_100_words())) \
- 0.296 * (self.parser.average_sentences_per_100_words()) - 15.8
