def month_and_year(m=None, y=None):
    'Creates a string from month and year data, if available.'
    if (y is None):
        return 'present'
    if (m is None):
        return str(y)
    m = month_to_int(m)
    return '{0} {1}'.format(SHORT_MONTH_NAMES[m], y)
Creates a string from month and year data, if available.
def month_and_year(m=None, y=None):
    
    if (y is None):
        return 'present'
    if (m is None):
        return str(y)
    m = month_to_int(m)
    return '{0} {1}'.format(SHORT_MONTH_NAMES[m], y)