Add a way to store default parameters

[mikesmic]

@merrygoat do you know I good way to do this? So we could have a separate file to store any default parameters for all the modules. I think a some parameters are hardcoded all over the place currently

[merrygoat]

It depends how many there are. If there are 6 or fewer then you can do them as command line parameters. Something like:

import argparse

def get_arguments():
    """ Get command-line arguments passed to this file

    :return parser: Arguments passed on the command line (argparse.ArgumentParser)
    """
    # Set up parser and sub parsers
    parser = argparse.ArgumentParser()

    parser.add_argument("-f", "--file_path",
                        help="The file path to process",
                        default="temp.data")
    parser.add_argument("-p", "--num_penguins",
                        help="The number of penguins being observed.",
                        default="42")

def main(paramter_dict):
    file_path = paramter_dict["file_path"]
    number_of_penguins = paramter_dict["num_penguins"]

if __main__():
    ARG_PARSER = get_arguments()
    # Convert arg parser object to a dictionary
    ARGS = vars(ARG_PARSER.parse_args([]))

    main(ARGS)`

If there are more than 6 or so this then becomes quite unwieldy and you are better with a config file. In this case I like the .ini config format (just like .cpr files) where section headers are in square brackets and the values beneath are in the key=value style

[Acquisition Surface]
Euler1=0.0
[Fields]
Count=9
Field1=3

You can then read this file nicely into a dictionary like object using the configparser built in module: https://docs.python.org/3/library/configparser.html