class Markov(dict):
    def __init__(self, source_file=None):

        # Going to remove, just testing
        with open(source_file, 'r') as file:
            self.source = file.read().split()

        if source_file:
            self.word_list = self.source
            self.markov = self.gen_markov(self.word_list)
        else:
            raise ValueError('No source file found')

    def gen_markov(self, word_list):
        print('Nothing in here prints')
        for i in range(len(word_list) - 1):
            print('test')
            yield (word_list[i], word_list[i + 1])

if __name__ == "__main__":
    Markov('sampletest.txt')