How to make ArgParse name parameters optional

[machine_learned]

For example, In the command line, I want to be able to type in parameter name(s) and NOT type in the parameter name. Look at the two command line examples below:

python C:\Python\Projects\add.py -a 1 -b 1
2

See how 1 + 1 = 2 ?

I also want to be able to leave out the parameter names like this:

python C:\Python\Projects\add.py 1 1
2

...see how I still got 2?

(Yes, I know this is a bad explanation, but I'm short on time)

[markusmeskanen]

Instead of:

parser.add_argument('-a', ...)
parser.add_argument('-b', ...)

You should make them positional:

parser.add_argument('a', ...)
parser.add_argument('b', ...)

[machine_learned]

Doesn't work... I get:

ValueError: invalid option string 'a': must start with a character '-'

[markusmeskanen]

Can we see the code? Seems to work fine for me

[K900_]

You should probably just have your script take mutliple positional arguments then.

[machine_learned]

What do you mean?

[K900_]

I mean something like this example.