tailf.py

"""
python tailf.py thefile
equals linux shell order : tail -f thefile
"""

import time
def trackline(thefile):
	thefile.seek(0, 2)
	while True:
		line = thefile.readline()
		if not line:
			time.sleep(1)
			continue
		yield line


if __name__ == '__main__':
	import sys
	thefile = sys.argv[1]
	thefile = open(thefile)
	for line in trackline(thefile):
		print(line.replace('\n', ''))