import re def findnum(filename): with open(filename, 'r') as fin,open('frequency.txt','w') as fout: text = fin.read() word = re.findall("[a-z]+",str.lower(text)) word_set = list(set(word)) word_set = sorted(word_set) print(word_set) for i in word_set: non_word = re.match("-+",i) if not non_word: fout.write(i +" : "+str(word.count(i))+"\n") if __name__ == '__main__': findnum('a.txt')