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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 create_wallet(password, api_code, service_url, priv=None, label=None, email=None):
 """Create a new Blockchain.info wallet. It can be created containing a pre-generated private key or will otherwise generate a new private key. :param str password: password for the new wallet. At least 10 characters. :param str api_code: API code with create wallets permission :param str service_url: URL to an instance of service-my-wallet-v3 (with trailing slash) :param str priv: private key to add to the wallet (optional) :param str label: label for the first address in the wallet (optional) :param str email: email to associate with the new wallet (optional) :return: an instance of :class:`WalletResponse` class """

        
        params = {'password': password, 'api_code': api_code}
        if priv is not None:
            params['priv'] = priv
        if label is not None:
            params['label'] = label
        if email is not None:
            params['email'] = email
        
        response = util.call_api("api/v2/create", params, base_url=service_url)
        json_response = json.loads(response)
        return CreateWalletResponse(json_response['guid'],
                                    json_response['address'],
                                    json_response['label'])