import argparse
import queue
def tail(filename, n):
q = queue.Queue()
size = 0
with open(filename) as fh:
for line in fh:
q.put(line.strip())
if size >= n:
q.get()
else:
size += 1
for i in range(size):
print(q.get())
if __name__ == '__main__':
parser = argparse.ArgumentParser(description='Print last n lines from a file.')
parser.add_argument('file', type=str, help='File to read from')
parser.add_argument('-n', type=int, default=10, help='The last n lines to be printed')
args = parser.parse_args()
tail(args.file, args.n)
