Convert Degree Minutes to Decimal Degrees

degree_mins_to_decimal_degrees.py

def convert_degree_dec_min_to_degree_dec(degree_dec_min: str):
    """
    Converts a string that looks like this:
        - "12238.2974W"

    To this:
        - -122.63829

    In other words, it converts the "Degrees and Decimal Minutes" format
    to "Degree Decimals"

    More information here: https://www.maptools.com/tutorials/lat_lon/formats

    :param degree_dec_min: A string in the Degree and Decimal Minutes format

    :return: A float in the Degree Decimals format or None
    """
    try:
        is_negative = 'W' in degree_dec_min or 'S' in degree_dec_min
        minutes = float(degree_dec_min[-8:-1]) / 60
        dd = float(degree_dec_min[:-8]) + minutes

        if is_negative:
            return dd * -1
        else:
            return dd
    except (ValueError, IndexError):
        return