Python File Encoding Detect with CLI Tool

pythonEncodeDetect.py

import cmd
import string, sys
from chardet.universaldetector import UniversalDetector

class CLI(cmd.Cmd):
	def __init__(self):
		cmd.Cmd.__init__(self)
		self.prompt = '$'
		self.path = ''
		self.intro = '''Encoding Detection Usage Guide:
	path 'file name' - set up file path (could be absolute or relative path)
	scan - start scanning
	quit - exit the program
		'''

	def help_quit(self):
		print("Exit the program.")
	def do_quit(self, line):
		sys.exit()

	def help_path(self):
		print("set up file path (could be absolute or relative path)")
	def do_path(self, pathName):
		if pathName == "": pathName = raw_input("Type the file path: ")
		if pathName != "":
			self.path = pathName

	def help_scan(self):
		print("Must set up path first before scanning")
	def do_scan(self, anything):
		if self.path == "":
			print("set up path first!")
		else:
			detector = UniversalDetector()
			with open('/Users/Aimingnie/Desktop/webapp/0001193125-12-511683.txt', 'r') as f:
			    for line in f.readlines():
			        detector.feed(line)
			        if detector.done: break
			    detector.close()
			print detector.result
			
if __name__ == '__main__':
	cdc = CLI()
	cdc.cmdloop()