def main(arg=None):
"""Main Function"""
lines = []
arg = sys.argv
if len(arg) < 2:
lines = get_default_lines()
else:
input_file = open(arg[1], 'r')
raw_lines = input_file.read()
lines = raw_lines.strip().split('\n')
print lines
markov_chain = MarkovChain(lines)
markov_dict = markov_chain.get_dictionary()
print markov_dict
print markov_chain.generate_line()
print markov_chain.generate_line()
print markov_chain.generate_line()
