def getMonth(month):
    """Method to return the month in a number format

    Args:
        month (string): the month in a string format

    Returns:
        string: month in the number format
    """

    if month == 'Jan':
        return '01'
    elif month == 'May':
        return '05'
    elif month == 'Jun':
        return '06'
    elif month == 'Jul':
        return '07'
    elif month == 'Aug':
        return '08'
    elif month == 'Dec':
        return '12'
    else:
        return None