equals sign in Python's argument

Question

I'd like to put be able launch python's scripts from the shell command line in a following manner:

python script_name -temp=value1 -press=value2

I wrote sth like that:

#!/usr/bin/python

import sys
import argparse
parser = argparse.ArgumentParser()
parser.add_argument("temp", help="specify the temperature [K]", type=float)
parser.add_argument("press", help="specify the pressure [Pa]", type=float)

args = parser.parse_args()
temp = args.temp
press = args.press
print temp
print press

And the imput can be:

python script_name value1 value2

How to be able to enter the values in manner -arg=value ?

Answer 1

Use parser.add_argument("--temp", ...)

There are great examples in the argparser manual:

http://docs.python.org/2.7/library/argparse.html

Edit:

For arguments starting with - only the pattern -argument VALUE works. This works also for arguments starting with --, but here you can also use the pattern --argument=VALUE.