common.py 文件源码

def format_datetime(dttm):
    # 1. Convert to timezone-aware
    # 2. Convert to UTC
    # 3. Format in ISO format
    # 4. Add subsecond value if non-zero
    # 5. Add "Z"

    if dttm.tzinfo is None or dttm.tzinfo.utcoffset(dttm) is None:
        # dttm is timezone-naive; assume UTC
        zoned = pytz.utc.localize(dttm)
    else:
        zoned = dttm.astimezone(pytz.utc)
    ts = zoned.strftime("%Y-%m-%dT%H:%M:%S")
    if zoned.microsecond > 0:
        ms = zoned.strftime("%f")
        ts = ts + '.' + ms.rstrip("0")
    return ts + "Z"