Python.ShuffleText.py

class ShuffleLine:

    def __init__(self, inp_file):
        self.file_name = inp_file

    # Shuffling with help of list of tuples
    def shuffle_read(self):
        file_name = self.file_name
        with open(file_name, 'r') as f:
            data = [(random.random(), line) for line in f]
        data.sort()
        with open(file_name, 'w') as target:
            for _, line in data:
                target.write(line)
        return len(data)

    # Shuffling via random.shuffle(method) and then writing the shuffled
    # content to the same file
    def shuffle_readline(self):
        file_name = self.file_name
        with open(file_name, 'r') as f:
            lines = f.readlines()
            random.shuffle(lines)

        with open(file_name, 'w') as f:
            f.writelines(lines)

        return len(lines)