python script that says IP address. (Fail safe in case avahi-daemon fails/unusable)

sayIP.py

"""
Dependency:
Python 2.7
festival (can be downloaded from apt-get)[http://www.cstr.ed.ac.uk/projects/festival/]


Raspberry pi audio device select:
amixer cset numid=3 0   # auto select (inaccurate)
amixer cset numid=3 1   # analog jack 3.5mm
amixer cset numid=3 2   # HDMI
"""


import subprocess

def sayThis(text):
	p = subprocess.Popen(['festival', '--tts'], stdin=subprocess.PIPE)
	p.communicate(input=text)
	
def getIP():
	ips = subprocess.check_output(['hostname', '-I'])
	return ips.split(' ')[:-1]
	
def sayIP():
	ips = getIP()
	print ips
	head = 'Number of I P address found is: {0}'.format(len(ips))
	sayThis(head)
	for i in range(len(ips)):
		toSay = 'I P Address {0} is: {1}'.format(i+1, ips[i])
		sayThis(toSay)
    

if __name__ == '__main__':
	sayIP()
	
	# another way with piped execution
	#~ ps = subprocess.Popen(['hostname', '-I'], stdout=subprocess.PIPE)
	#~ output = subprocess.call(['festival', '--tts'], stdin=ps.stdout)
	#~ ps.wait()