python - TypeError : can't compare datetime. timedelta float

Question

我正在使用我的 python 脚本来计算开始日期和结束日期格式之间的持续时间，例如 20140520160000 和 20140520170000 这样我就可以得到小时数。

我在使用这段代码时遇到了问题:

if epgDuration >= 0.10 and epgDuration <= 0.30:
   epgwidth = "250"

当我尝试比较 0.10 分钟和 0.30 分钟之间的时间范围时出现错误。

我得到的错误是:TypeError: can't compare datetime.timedelta to float。

错误跳到这一行:

if epgDuration >= 0.10 and epgDuration <= 0.30:

结果如下:

14:44:55 T:1580  NOTICE: 0:30:00
14:44:55 T:1580  NOTICE: 2:30:00
14:44:55 T:1580  NOTICE: 3:00:00
14:44:55 T:1580  NOTICE: 1:00:00
14:44:55 T:1580  NOTICE: 0:30:00
14:44:55 T:1580  NOTICE: 0:30:00
14:44:55 T:1580  NOTICE: 0:30:00
14:44:55 T:1580  NOTICE: 0:30:00
14:44:55 T:1580  NOTICE: 0:30:00
14:44:55 T:1580  NOTICE: 0:30:00
14:44:55 T:1580  NOTICE: 1:00:00
14:44:55 T:1580  NOTICE: 0:30:00
14:44:55 T:1580  NOTICE: 0:30:00
14:44:55 T:1580  NOTICE: 0:30:00

这是我用来持续时间的代码:

for row in programs:
    program_startdate = str(row[2])
    program_endDate = str(row[3])

    try:
       start_date = datetime.datetime.strptime(program_startdate, "%Y%m%d%H%M%S")
       end_date = datetime.datetime.strptime(program_endDate, "%Y%m%d%H%M%S")
    except TypeError:
       start_date = datetime.datetime.fromtimestamp(time.mktime(time.strptime(program_startdate, "%Y%m%d%H%M%S")))
       end_date = datetime.datetime.fromtimestamp(time.mktime(time.strptime(program_endDate, "%Y%m%d%H%M%S")))

    #workout the duration times to get the program time
    epgDuration = end_date - start_date

    if epgDuration >= 0.10 and epgDuration <= 0.30:
       epgwidth = "250"

    elif epgDuration >= 1.00 and epgDuration <= 1.29:
         epgwidth = "500"
    print epgwidth

Answer 1

事实上，您不能将 timedelta 与浮点值进行比较。

您可以将对象转换为秒:

if 600 <= epgDuration.total_seconds() <= 1800:

10 分钟是 600 秒，30 分钟是 1800 秒。

或者创建新的 timedelta() 对象进行比较:

epgwidth = "0"

if timedelta(minutes=10) <= epgDuration <= timedelta(minutes=30):
    epgwidth = "250"

elif timedelta(hours=1) <= epgDuration <= timedelta(hours=1.5):
    epgwidth = "500"

我在 if 语句之前为 epgwidth 指定了一个默认值，以防时差不在 10-30 分钟或 1-1.5 小时内范围。