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Day 21 Of 100Daysofcode: Written Simple Class To Read Local File And Find The Occurrence Of Numbers and Words.

Durga Pokharel
A mathematics student learning to code.
・30 min read

Today I gave my time to learn more about regular expression. I tried to write my simple project on the basic CSS. Also I learned more properties of CSS from Freecodecamp.

Tried to write code related to python with the help of friend and goggle. I tried to write simple class which read data from given file find numbers, words, occurrence of words and occurrence of numbers.

File Handler Class:

I learned while study a class is like an object constructor, or a "blueprint" for creating objects. My simple code regarding to the class which able to read the data from given file. Find out the numbers present in the file, words in a file and find out occurance of same numbers and words from the given data is given below.
Initialize the class by giving file directory.Read the file and place each line in the list.
Initialize empty list as attribute of class to store each number and each words. Initialize empty dictionary as attribute of class to store each occurrence of number and words.

import re
class FileHandler:
    def __init__(self,filename = None):
        self.file = open(filename)
        self.lines = [line.strip() for line in self.file.readlines()]
        self.numbers = []
        self.words = []
        self.num_occur = {}
        self.word_occur = {}

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Method to find all the words in file and place it in list declared earlier.

   def get_words(self):
        total = []
        for line in self.lines:

            line = line.rstrip()
            words = re.findall('(?!\d)\w+',line)
            #print(type(words))
            if len(words) == 0 :continue
            total.extend(words)
        self.words = total
        return self.words
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Tried to make method to find all the numbers in file and place it in list declared earlier.

  def get_numbers(self):
        total = []
        for line in self.lines:
            line = line.rstrip()
            numbers = re.findall('[0-9]+',line)
            if len(numbers) == 0:continue
            num = [int(i) for i in numbers]
            total.extend(num)
        self.numbers = total
        return self.numbers
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Make a method to find occurrence of each number in file. For this I make a dictioanry earlier. Kept the numbers as a key and numbers of number occurre as a value.

 def get_occur_numbers(self):
        for key in self.numbers:
            if self.num_occur.get(key) is not None:
                self.num_occur[key] += 1
            else:
                self.num_occur[key] = 1
        return self.num_occur

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Make a method to find occurrence of each word in file. For this I make a dictioanry earlier. Kept the words as a key and numbers of words occure as a value..

 def get_occur_words(self):
        for key in self.words:
            if self.word_occur.get(key) is not None:
                self.word_occur[key] += 1
            else:
                self.word_occur[key] = 1
        return self.word_occur

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And this is from where I called method

fhand = FileHandler('file2.txt')
print(fhand.get_words())
print(fhand.get_numbers())
print(fhand.get_occur_numbers())
print(fhand.get_occur_words())
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And my Full code look like below

import re
class FileHandler:
    def __init__(self,filename = None):
        self.file = open(filename)
        self.lines = [line.strip() for line in self.file.readlines()]
        self.numbers = []
        self.words = []
        self.num_occur = {}
        self.word_occur = {}


    def get_words(self):
        total = []
        for line in self.lines:

            line = line.rstrip()
            words = re.findall('(?!\d)\w+',line)
            #print(type(words))
            if len(words) == 0 :continue
            total.extend(words)
        self.words = total
        return self.words


    def get_numbers(self):
        total = []
        for line in self.lines:
            line = line.rstrip()
            numbers = re.findall('[0-9]+',line)
            if len(numbers) == 0:continue
            num = [int(i) for i in numbers]
            total.extend(num)
        self.numbers = total
        return self.numbers


    def get_occur_numbers(self):
        for key in self.numbers:
            if self.num_occur.get(key) is not None:
                self.num_occur[key] += 1
            else:
                self.num_occur[key] = 1
        return self.num_occur



    def get_occur_words(self):
        for key in self.words:
            if self.word_occur.get(key) is not None:
                self.word_occur[key] += 1
            else:
                self.word_occur[key] = 1
        return self.word_occur



fhand = FileHandler('file2.txt')
print(fhand.get_words())
print(fhand.get_numbers())
print(fhand.get_occur_numbers())
print(fhand.get_occur_words())
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When this code is run we get following output

['This', 'file', 'contains', 'the', 'actual', 'data', 'for', 'your', 'assignment', 'good', 'luck', 'Why', 'should', 'you', 'learn', 'to', 'write', 'programs', 'Writing', 'programs', 'or', 'programming', 'is', 'a', 'very', 'creative', 'and', 'rewarding', 'activity', 'You', 'can', 'write', 'programs', 'for', 'many', 'reasons', 'ranging', 'from', 'making', 'your', 'living', 'to', 'solving', 'a', 'difficult', 'data', 'analysis', 'problem', 'to', 'having', 'fun', 'to', 'helping', 'someone', 'else', 'solve', 'a', 'problem', 'This', 'book', 'assumes', 'that', 'everyone', 'needs', 'to', 'know', 'how', 'to', 'program', 'and', 'that', 'once', 'you', 'know', 'how', 'to', 'program', 'you', 'will', 'figure', 'out', 'what', 'you', 'want', 'to', 'do', 'with', 'your', 'newfound', 'skills', 'We', 'are', 'surrounded', 'in', 'our', 'daily', 'lives', 'with', 'computers', 'ranging', 'from', 'laptops', 'to', 'cell', 'phones', 'We', 'can', 'think', 'of', 'these', 'computers', 'as', 'our', 'personal', 'assistants', 'who', 'can', 'take', 'care', 'of', 'many', 'things', 'on', 'our', 'behalf', 'The', 'hardware', 'in', 'our', 'current', 'day', 'computers', 'is', 'essentially', 'built', 'to', 'continuously', 'ask', 'us', 'the', 'question', 'What', 'would', 'you', 'like', 'me', 'to', 'do', 'next', 'Programmers', 'add', 'an', 'operating', 'system', 'and', 'a', 'set', 'of', 'applications', 'to', 'the', 'hardware', 'and', 'we', 'end', 'up', 'with', 'a', 'Personal', 'Digital', 'Assistant', 'that', 'is', 'quite', 'helpful', 'and', 'capable', 'of', 'helping', 'us', 'do', 'many', 'different', 'things', 'Our', 'computers', 'are', 'fast', 'and', 'have', 'vast', 'amounts', 'of', 'memory', 'and', 'could', 'be', 'very', 'helpful', 'to', 'us', 'if', 'we', 'only', 'knew', 'the', 'language', 'to', 'speak', 'to', 'explain', 'to', 'the', 'computer', 'what', 'we', 'would', 'like', 'it', 'to', 'do', 'next', 'If', 'we', 'knew', 'this', 'language', 'we', 'could', 'tell', 'the', 'computer', 'to', 'do', 'tasks', 'on', 'our', 'behalf', 'that', 'were', 'repetitive', 'Interestingly', 'the', 'kinds', 'of', 'things', 'computers', 'can', 'do', 'best', 'are', 'often', 'the', 'kinds', 'of', 'things', 'that', 'we', 'humans', 'find', 'boring', 'and', 'mind', 'numbing', 'For', 'example', 'look', 'at', 'the', 'first', 'three', 'paragraphs', 'of', 'this', 'chapter', 'and', 'tell', 'me', 'the', 'most', 'commonly', 'used', 'word', 'and', 'how', 'many', 'times', 'the', 'word', 'is', 'used', 'While', 'you', 'were', 'able', 'to', 'read', 'and', 'understand', 'the', 'words', 'in', 'a', 'few', 'seconds', 'counting', 'them', 'is', 'almost', 'painful', 'because', 'it', 'is', 'not', 'the', 'kind', 'of', 'problem', 'that', 'human', 'minds', 'are', 'designed', 'to', 'solve', 'For', 'a', 'computer', 'the', 'opposite', 'is', 'true', 'reading', 'and', 'understanding', 'text', 'from', 'a', 'piece', 'of', 'paper', 'is', 'hard', 'for', 'a', 'computer', 'to', 'do', 'but', 'counting', 'the', 'words', 'and', 'telling', 'you', 'how', 'many', 'times', 'the', 'most', 'used', 'word', 'was', 'used', 'is', 'very', 'easy', 'for', 'the', 'computer', 'Our', 'personal', 'information', 'analysis', 'assistant', 'quickly', 'told', 'us', 'that', 'the', 'word', 'to', 'was', 'used', 'sixteen', 'times', 'in', 'the', 'first', 'three', 'paragraphs', 'of', 'this', 'chapter', 'This', 'very', 'fact', 'that', 'computers', 'are', 'good', 'at', 'things', 'that', 'humans', 'are', 'not', 'is', 'why', 'you', 'need', 'to', 'become', 'skilled', 'at', 'talking', 'computer', 'language', 'Once', 'you', 'learn', 'this', 'new', 'language', 'you', 'can', 'delegate', 'mundane', 'tasks', 'to', 'your', 'partner', 'the', 'computer', 'leaving', 'more', 'time', 'for', 'you', 'to', 'do', 'the', 'things', 'that', 'you', 'are', 'uniquely', 'suited', 'for', 'You', 'bring', 'creativity', 'intuition', 'and', 'inventiveness', 'to', 'this', 'partnership', 'Creativity', 'and', 'motivation', 'While', 'this', 'book', 'is', 'not', 'intended', 'for', 'professional', 'programmers', 'professional', 'programming', 'can', 'be', 'a', 'very', 'rewarding', 'job', 'both', 'financially', 'and', 'personally', 'Building', 'useful', 'elegant', 'and', 'clever', 'programs', 'for', 'others', 'to', 'use', 'is', 'a', 'very', 'creative', 'activity', 'Your', 'computer', 'or', 'Personal', 'Digital', 'Assistant', 'PDA', 'usually', 'contains', 'many', 'different', 'programs', 'from', 'many', 'different', 'groups', 'of', 'programmers', 'each', 'competing', 'for', 'your', 'attention', 'and', 'interest', 'They', 'try', 'their', 'best', 'to', 'meet', 'your', 'needs', 'and', 'give', 'you', 'a', 'great', 'user', 'experience', 'in', 'the', 'process', 'In', 'some', 'situations', 'when', 'you', 'choose', 'a', 'piece', 'of', 'software', 'the', 'programmers', 'are', 'directly', 'compensated', 'because', 'of', 'your', 'choice', 'If', 'we', 'think', 'of', 'programs', 'as', 'the', 'creative', 'output', 'of', 'groups', 'of', 'programmers', 'perhaps', 'the', 'following', 'figure', 'is', 'a', 'more', 'sensible', 'version', 'of', 'our', 'PDA', 'For', 'now', 'our', 'primary', 'motivation', 'is', 'not', 'to', 'make', 'money', 'or', 'please', 'end', 'users', 'but', 'instead', 'for', 'us', 'to', 'be', 'more', 'productive', 'in', 'handling', 'the', 'data', 'and', 'information', 'that', 'we', 'will', 'encounter', 'in', 'our', 'lives', 'When', 'you', 'first', 'start', 'you', 'will', 'be', 'both', 'the', 'programmer', 'and', 'the', 'end', 'user', 'of', 'your', 'programs', 'As', 'you', 'gain', 'skill', 'as', 'a', 'programmer', 'and', 'programming', 'feels', 'more', 'creative', 'to', 'you', 'your', 'thoughts', 'may', 'turn', 'toward', 'developing', 'programs', 'for', 'others', 'Computer', 'hardware', 'architecture', 'Before', 'we', 'start', 'learning', 'the', 'language', 'we', 'speak', 'to', 'give', 'instructions', 'to', 'computers', 'to', 'develop', 'software', 'we', 'need', 'to', 'learn', 'a', 'small', 'amount', 'about', 'how', 'computers', 'are', 'built', 'Central', 'Processing', 'Unit', 'or', 'CPU', 'is', 'the', 'part', 'of', 'the', 'computer', 'that', 'is', 'built', 'to', 'be', 'obsessed', 'with', 'what', 'is', 'next', 'If', 'your', 'computer', 'is', 'rated', 'at', 'three', 'Gigahertz', 'it', 'means', 'that', 'the', 'CPU', 'will', 'ask', 'What', 'next', 'three', 'billion', 'times', 'per', 'second', 'You', 'are', 'going', 'to', 'have', 'to', 'learn', 'how', 'to', 'talk', 'fast', 'to', 'keep', 'up', 'with', 'the', 'CPU', 'Main', 'Memory', 'is', 'used', 'to', 'store', 'information', 'that', 'the', 'CPU', 'needs', 'in', 'a', 'hurry', 'The', 'main', 'memory', 'is', 'nearly', 'as', 'fast', 'as', 'the', 'CPU', 'But', 'the', 'information', 'stored', 'in', 'the', 'main', 'memory', 'vanishes', 'when', 'the', 'computer', 'is', 'turned', 'off', 'Secondary', 'Memory', 'is', 'also', 'used', 'to', 'store', 'information', 'but', 'it', 'is', 'much', 'slower', 'than', 'the', 'main', 'memory', 'The', 'advantage', 'of', 'the', 'secondary', 'memory', 'is', 'that', 'it', 'can', 'store', 'information', 'even', 'when', 'there', 'is', 'no', 'power', 'to', 'the', 'computer', 'Examples', 'of', 'secondary', 'memory', 'are', 'disk', 'drives', 'or', 'flash', 'memory', 'typically', 'found', 'in', 'USB', 'sticks', 'and', 'portable', 'music', 'players', 'Input', 'and', 'Output', 'Devices', 'are', 'simply', 'our', 'screen', 'keyboard', 'mouse', 'microphone', 'speaker', 'touchpad', 'etc', 'They', 'are', 'all', 'of', 'the', 'ways', 'we', 'interact', 'with', 'the', 'computer', 'These', 'days', 'most', 'computers', 'also', 'have', 'a', 'Network', 'Connection', 'to', 'retrieve', 'information', 'over', 'a', 'network', 'We', 'can', 'think', 'of', 'the', 'network', 'as', 'a', 'very', 'slow', 'place', 'to', 'store', 'and', 'retrieve', 'data', 'that', 'might', 'not', 'always', 'be', 'up', 'So', 'in', 'a', 'sense', 'the', 'network', 'is', 'a', 'slower', 'and', 'at', 'times', 'unreliable', 'form', 'of', 'Secondary', 'Memory', 'While', 'most', 'of', 'the', 'detail', 'of', 'how', 'these', 'components', 'work', 'is', 'best', 'left', 'to', 'computer', 'builders', 'it', 'helps', 'to', 'have', 'some', 'terminology', 'so', 'we', 'can', 'talk', 'about', 'these', 'different', 'parts', 'as', 'we', 'write', 'our', 'programs', 'As', 'a', 'programmer', 'your', 'job', 'is', 'to', 'use', 'and', 'orchestrate', 'each', 'of', 'these', 'resources', 'to', 'solve', 'the', 'problem', 'that', 'you', 'need', 'to', 'solve', 'and', 'analyze', 'the', 'data', 'you', 'get', 'from', 'the', 'solution', 'As', 'a', 'programmer', 'you', 'will', 'mostly', 'be', 'talking', 'to', 'the', 'CPU', 'and', 'telling', 'it', 'what', 'to', 'do', 'next', 'Sometimes', 'you', 'will', 'tell', 'the', 'CPU', 'to', 'use', 'the', 'main', 'memory', 'secondary', 'memory', 'network', 'or', 'the', 'input', 'output', 'devices', 'You', 'need', 'to', 'be', 'the', 'person', 'who', 'answers', 'the', 'CPU', 's', 'What', 'next', 'question', 'But', 'it', 'would', 'be', 'very', 'uncomfortable', 'to', 'shrink', 'you', 'down', 'to', 'five', 'mm', 'tall', 'and', 'insert', 'you', 'into', 'the', 'computer', 'just', 'so', 'you', 'could', 'issue', 'a', 'command', 'three', 'billion', 'times', 'per', 'second', 'So', 'instead', 'you', 'must', 'write', 'down', 'your', 'instructions', 'in', 'advance', 'We', 'call', 'these', 'stored', 'instructions', 'a', 'program', 'and', 'the', 'act', 'of', 'writing', 'these', 'instructions', 'down', 'and', 'getting', 'the', 'instructions', 'to', 'be', 'correct', 'programming', 'Understanding', 'programming', 'In', 'the', 'rest', 'of', 'this', 'book', 'we', 'will', 'try', 'to', 'turn', 'you', 'into', 'a', 'person', 'who', 'is', 'skilled', 'in', 'the', 'art', 'of', 'programming', 'In', 'the', 'end', 'you', 'will', 'be', 'a', 'programmer', 'perhaps', 'not', 'a', 'professional', 'programmer', 'but', 'at', 'least', 'you', 'will', 'have', 'the', 'skills', 'to', 'look', 'at', 'a', 'data', 'information', 'analysis', 'problem', 'and', 'develop', 'a', 'program', 'to', 'solve', 'the', 'problem', 'problem', 'solving', 'In', 'a', 'sense', 'you', 'need', 'two', 'skills', 'to', 'be', 'a', 'programmer', 'First', 'you', 'need', 'to', 'know', 'the', 'programming', 'language', 'Python', 'you', 'need', 'to', 'know', 'the', 'vocabulary', 'and', 'the', 'grammar', 'You', 'need', 'to', 'be', 'able', 'to', 'spell', 'the', 'words', 'in', 'this', 'new', 'language', 'properly', 'and', 'know', 'how', 'to', 'construct', 'well', 'formed', 'sentences', 'in', 'this', 'new', 'language', 'Second', 'you', 'need', 'to', 'tell', 'a', 'story', 'In', 'writing', 'a', 'story', 'you', 'combine', 'words', 'and', 'sentences', 'to', 'convey', 'an', 'idea', 'to', 'the', 'reader', 'There', 'is', 'a', 'skill', 'and', 'art', 'in', 'constructing', 'the', 'story', 'and', 'skill', 'in', 'story', 'writing', 'is', 'improved', 'by', 'doing', 'some', 'writing', 'and', 'getting', 'some', 'feedback', 'In', 'programming', 'our', 'program', 'is', 'the', 'story', 'and', 'the', 'problem', 'you', 'are', 'trying', 'to', 'solve', 'is', 'the', 'idea', 'itemize', 'Once', 'you', 'learn', 'one', 'programming', 'language', 'such', 'as', 'Python', 'you', 'will', 'find', 'it', 'much', 'easier', 'to', 'learn', 'a', 'second', 'programming', 'language', 'such', 'as', 'JavaScript', 'or', 'C', 'The', 'new', 'programming', 'language', 'has', 'very', 'different', 'vocabulary', 'and', 'grammar', 'but', 'the', 'problem', 'solving', 'skills', 'will', 'be', 'the', 'same', 'across', 'all', 'programming', 'languages', 'You', 'will', 'learn', 'the', 'vocabulary', 'and', 'sentences', 'of', 'Python', 'pretty', 'quickly', 'It', 'will', 'take', 'longer', 'for', 'you', 'to', 'be', 'able', 'to', 'write', 'a', 'coherent', 'program', 'to', 'solve', 'a', 'brand', 'new', 'problem', 'We', 'teach', 'programming', 'much', 'like', 'we', 'teach', 'writing', 'We', 'start', 'reading', 'and', 'explaining', 'programs', 'then', 'we', 'write', 'simple', 'programs', 'and', 'then', 'we', 'write', 'increasingly', 'complex', 'programs', 'over', 'time', 'At', 'some', 'point', 'you', 'get', 'your', 'muse', 'and', 'see', 'the', 'patterns', 'on', 'your', 'own', 'and', 'can', 'see', 'more', 'naturally', 'how', 'to', 'take', 'a', 'problem', 'and', 'write', 'a', 'program', 'that', 'solves', 'that', 'problem', 'And', 'once', 'you', 'get', 'to', 'that', 'point', 'programming', 'becomes', 'a', 'very', 'pleasant', 'and', 'creative', 'process', 'We', 'start', 'with', 'the', 'vocabulary', 'and', 'structure', 'of', 'Python', 'programs', 'Be', 'patient', 'as', 'the', 'simple', 'examples', 'remind', 'you', 'of', 'when', 'you', 'started', 'reading', 'for', 'the', 'first', 'time', 'Words', 'and', 'sentences', 'Unlike', 'human', 'languages', 'the', 'Python', 'vocabulary', 'is', 'actually', 'pretty', 'small', 'We', 'call', 'this', 'vocabulary', 'the', 'reserved', 'words', 'These', 'are', 'words', 'that', 'have', 'very', 'special', 'meaning', 'to', 'Python', 'When', 'Python', 'sees', 'these', 'words', 'in', 'a', 'Python', 'program', 'they', 'have', 'one', 'and', 'only', 'one', 'meaning', 'to', 'Python', 'Later', 'as', 'you', 'write', 'programs', 'you', 'will', 'make', 'up', 'your', 'own', 'words', 'that', 'have', 'meaning', 'to', 'you', 'called', 'variables', 'You', 'will', 'have', 'great', 'latitude', 'in', 'choosing', 'your', 'names', 'for', 'your', 'variables', 'but', 'you', 'cannot', 'use', 'any', 'of', 'Python', 's', 'reserved', 'words', 'as', 'a', 'name', 'for', 'a', 'variable', 'When', 'we', 'train', 'a', 'dog', 'we', 'use', 'special', 'words', 'like', 'sit', 'stay', 'and', 'fetch', 'When', 'you', 'talk', 'to', 'a', 'dog', 'and', 'don', 't', 'use', 'any', 'of', 'the', 'reserved', 'words', 'they', 'just', 'look', 'at', 'you', 'with', 'a', 'quizzical', 'look', 'on', 'their', 'face', 'until', 'you', 'say', 'a', 'reserved', 'word', 'For', 'example', 'if', 'you', 'say', 'I', 'wish', 'more', 'people', 'would', 'walk', 'to', 'improve', 'their', 'overall', 'health', 'what', 'most', 'dogs', 'likely', 'hear', 'is', 'blah', 'blah', 'blah', 'walk', 'blah', 'blah', 'blah', 'blah', 'That', 'is', 'because', 'walk', 'is', 'a', 'reserved', 'word', 'in', 'dog', 'language', 'The', 'reserved', 'words', 'in', 'the', 'language', 'where', 'humans', 'talk', 'to', 'Python', 'include', 'the', 'following', 'and', 'del', 'from', 'not', 'while', 'as', 'elif', 'global', 'or', 'with', 'assert', 'else', 'if', 'pass', 'yield', 'break', 'except', 'import', 'print', 'class', 'exec', 'in', 'raise', 'continue', 'finally', 'is', 'return', 'def', 'for', 'lambda', 'try', 'That', 'is', 'it', 'and', 'unlike', 'a', 'dog', 'Python', 'is', 'already', 'completely', 'trained', 'When', 'you', 'say', 'try', 'Python', 'will', 'try', 'every', 'time', 'you', 'say', 'it', 'without', 'fail', 'We', 'will', 'learn', 'these', 'reserved', 'words', 'and', 'how', 'they', 'are', 'used', 'in', 'good', 'time', 'but', 'for', 'now', 'we', 'will', 'focus', 'on', 'the', 'Python', 'equivalent', 'of', 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'Python', 'on', 'your', 'computer', 'That', 'is', 'too', 'much', 'detail', 'for', 'this', 'chapter', 'so', 'I', 'suggest', 'that', 'you', 'consult', 'www', 'py4e', 'com', 'where', 'I', 'have', 'detailed', 'instructions', 'and', 'screencasts', 'of', 'setting', 'up', 'and', 'starting', 'Python', 'on', 'Macintosh', 'and', 'Windows', 'systems', 'At', 'some', 'point', 'you', 'will', 'be', 'in', 'a', 'terminal', 'or', 'command', 'window', 'and', 'you', 'will', 'type', 'python', 'and', 'the', 'Python', 'interpreter', 'will', 'start', 'executing', 'in', 'interactive', 'mode', 'and', 'appear', 'somewhat', 'as', 'follows', 'interactive', 'mode', 'The', 'prompt', 'is', 'the', 'Python', 'interpreter', 's', 'way', 'of', 'asking', 'you', 'What', 'do', 'you', 'want', 'me', 'to', 'do', 'next', 'Python', 'is', 'ready', 'to', 'have', 'a', 'conversation', 'with', 'you', 'All', 'you', 'have', 'to', 'know', 'is', 'how', 'to', 'speak', 'the', 'Python', 'language', 'Let', 's', 'say', 'for', 'example', 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