#! /usr/bin/python
import sys, getopt, string
def help_message():
	print '''options.py	-- uses getopt to recognize options
Options:	-h		-- displays this help message
		-a		-- expects an argument
		--file=		-- expects an argument
		--view		-- doesn't necessarily expect an argument
		--version	-- displays Python version'''
	sys.exit(0)
try:
	options, xarguments = getopt.getopt(sys.argv[1:],
	'ha', ['file=', '--view', 'version'])
except getopt.error:
	print '''Error: You tried to use an unknown option or the
	argument for an option that requires it was missing. Try
	`options.py -h\' for more information.'''
	sys.exit(0)
for a in options[:]:
	if a[0] == '-h':
		help_message()
for a in options[:]:
	if a[0] == '-a' and a[1] != '':
		print a[0]+' = '+a[1]
		options.remove(a)
		break
	elif a[0] == '-a' and a[1] == '':
		print '-a expects an argument'
		sys.exit(0)
for a in options[:]:
	if a[0] == '--file' and a[1] != '':
		print a[0]+' = '+a[1]
		options.remove(a)
		break
	elif a[0] == '--file' and a[1] == '':
		print '--file expects an argument'
		sys.exit(0)
for a in options[:]:
	if a[0] == '--view' and a[1] != '':
		print a[0]+' = '+a[1]
		options.remove(a)
		break
	elif a[0] == '--view' and a[1] == '':
		print '--view doesn\'t necessarily expects an argument...'
		options.remove(a)
		sys.exit(0)
for a in options[:]:
	if a[0] == '--version':
		print 'options version 0.0.001'
		sys.exit(0)
for a in options[:]:
	if a[0] == '--python-version':
		print 'Python '+sys.version
		sys.exit(0)