offsets.py 文件源码

def _get_firstbday(wkday):
    """
    wkday is the result of monthrange(year, month)

    If it's a saturday or sunday, increment first business day to reflect this
    """
    first = 1
    if wkday == 5:  # on Saturday
        first = 3
    elif wkday == 6:  # on Sunday
        first = 2
    return first