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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def load_config():
 """Load configuration file containing API KEY and other settings. :rtype: str """


    configfile = get_configfile()

    if not os.path.exists(configfile):
        data = {
            'apikey': 'GET KEY AT: https://www.filemail.com/apidoc/ApiKey.aspx'
            }

        save_config(data)

    with open(configfile, 'rb') as f:
        return json.load(f)