functions.py 文件源码

def to_timestamp(dt, tz_in=None):
    """Convert value to Unix timestamp (ns)

    :param dt: value representing a date/time (parsed by pandas.Timestamp)
    :param tz_in: time zone to localize data/time value to (parsed by pandas.Timestamp.tz_localize)
    :returns: Unix timestamp (ns)
    :rtype: int
    """

    if dt is None:
        return None
    try:
        ts = pd.Timestamp(dt)
        if tz_in:
            ts = ts.tz_localize(tz_in)
        return ts.value
    except BaseException:
        return None