simulate tail -f command line

tail.py

def tail_F(filename):
    p = 0
    with open(filename, 'r') as f:
        while True:
        f.seek(p)
        new_line = f.read()
        p = f.tell()
        if new_line:
            print new_line
            print str(p).center(10).center(80, '=')
if __name__ == '__main__':
    filename = 'whileloop.py'
    tail_F(filename)

@hvnsweeting blabla