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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 describe_api_stage(restApiId, stageName, region=None, key=None, keyid=None, profile=None):
    '''
    Get API stage for a given apiID and stage name

    CLI Example:

    .. code-block:: bash

        salt myminion boto_apigateway.describe_api_stage restApiId stageName

    '''
    try:
        conn = _get_conn(region=region, key=key, keyid=keyid, profile=profile)
        stage = conn.get_stage(restApiId=restApiId, stageName=stageName)
        return {'stage': _convert_datetime_str(stage)}
    except ClientError as e:
        return {'error': __utils__['boto3.get_error'](e)}