definitions.py 文件源码

def set_custom_user_vars(opt_key, settings, args):
    """Set custom user configuration variables"""

    custom_vars = args.get(opt_key)
    if not custom_vars:
        return

    for var in custom_vars:
        # parse key-value pair
        var = var.strip()
        eq_pos = var.find('=')
        if eq_pos < 1 or eq_pos > len(var) - 2:
            raise RuntimeError('Expected "key=value" for --conf-var command-line argument; got "{}"'.format(var))
        key, value = var[:eq_pos].strip(), var[eq_pos + 1:].strip()

        # interpret type of value
        try:
            settings[key] = ast.literal_eval(value)
        except:
            settings[key] = value