[Solved] Write a --help for Python program.

Question

Hello.
I write programs in Python and I don't know one thing.
How to write --help command for python program (like calc.py --help).
And after this command you will see help.
Anyone know how to do something like that?
Thanks
Last edited by SpeedVin (2009-09-26 16:53:14)

Answer 1

genisis300 wrote:
you need to use a module called option parser
http://www.alexonlinux.com/pythons-optp … man-beings
if you still need help let me know and i post an example.
Regards
Matthew
Thanks that awesome!.
But I added some arguments and when I try to run program I got:
File "calculator.py", line 7
(opts, args) = parser.parse_args()
^
SyntaxError: invalid syntax
Here is my code:
1 #!/usr/bin/env python
2 # -*- coding: utf-8 -*-
3 import optparse
4 parser = optparse.OptionParser()
5 parser.add_option('-h', '--help', help='Show this help message'
6
7 (opts, args) = parser.parse_args()
8 #
9 #def help():
10 # print "+ = plus"
11 # print "- = minus"
12 # print "* = multiplication"
13 # print "/ = division"
14 # print "// = floor division"
15 # End of function.
16 print "If you need help just write --help or -h."
17 number1 = int(raw_input('Write a number: '))
18 number2 = int(raw_input('Write a number nr.2: '))
19 znak = raw_input('What to do?')
20 if znak == '+':
21 print number1 + number2
22 elif znak == '-':
23 print number1 - number2
24 elif znak == '*':
25 print number1 * number2
26 elif znak == '/':
27 print number1 / number2
28 elif znak == '**':
29 print number1 ** number2
30 elif znak == '//':
31 print number1 // number2
32 else:
33 print "I don't know what to do with " + znak
34 #if raw_input() == help:
35 # help()
Last edited by SpeedVin (2009-09-26 09:40:26)