我在格式化datetime.timedelta对象时遇到问题。
这就是我想要做的事情：我有一个对象列表，对象类的成员之一是 timedelta 对象，它显示事件的持续时间。我想以小时：分钟的格式显示该持续时间。
我已经尝试了多种方法来做到这一点，但我遇到了困难。我目前的方法是为返回小时和分钟的对象添加方法到类。我可以通过将 timedelta.seconds 除以 3600 并四舍五入来获得小时数。我无法获得剩余的秒数并将其转换为分钟。
顺便说一句，我正在使用带有 Django 模板的 Google AppEngine 进行演示。
您可以使用 str() 将 timedelta 转换为字符串。这是一个例子：
import datetime
start = datetime.datetime(2009,2,10,14,00)
end = datetime.datetime(2009,2,10,16,00)
delta = end-start
print(str(delta))
# prints 2:00:00
.seconds如您所知，您可以通过访问属性从 timedelta 对象中获取 total_seconds 。
Python 提供了内置函数divmod()，它允许：
s = 13420
hours, remainder = divmod(s, 3600)
minutes, seconds = divmod(remainder, 60)
print '{:02}:{:02}:{:02}'.format(int(hours), int(minutes), int(seconds))
# result: 03:43:40
或者您可以使用模数和减法的组合转换为小时和余数：
# arbitrary number of seconds
s = 13420
# hours
hours = s // 3600
# remaining seconds
s = s - (hours * 3600)
# minutes
minutes = s // 60
# remaining seconds
seconds = s - (minutes * 60)
# total time
print '{:02}:{:02}:{:02}'.format(int(hours), int(minutes), int(seconds))
# result: 03:43:40
>>> str(datetime.timedelta(hours=10.56))
10:33:36
>>> td = datetime.timedelta(hours=10.505) # any timedelta object
>>> ':'.join(str(td).split(':')[:2])
10:30
timedelta将对象传递给str()函数调用与我们简单键入时使用的相同格式代码print td。由于您不想要秒，我们可以用冒号（3 部分）拆分字符串，然后将其与前 2 部分重新组合在一起。
def td_format(td_object):
seconds = int(td_object.total_seconds())
periods = [
('year', 60*60*24*365),
('month', 60*60*24*30),
('day', 60*60*24),
('hour', 60*60),
('minute', 60),
('second', 1)
]
strings=[]
for period_name, period_seconds in periods:
if seconds > period_seconds:
period_value , seconds = divmod(seconds, period_seconds)
has_s = 's' if period_value > 1 else ''
strings.append("%s %s%s" % (period_value, period_name, has_s))
return ", ".join(strings)
我个人为此使用该humanize库：
>>> import datetime
>>> humanize.naturalday(datetime.datetime.now())
'today'
>>> humanize.naturalday(datetime.datetime.now() - datetime.timedelta(days=1))
'yesterday'
>>> humanize.naturalday(datetime.date(2007, 6, 5))
'Jun 05'
>>> humanize.naturaldate(datetime.date(2007, 6, 5))
'Jun 05 2007'
>>> humanize.naturaltime(datetime.datetime.now() - datetime.timedelta(seconds=1))
'a second ago'
>>> humanize.naturaltime(datetime.datetime.now() - datetime.timedelta(seconds=3600))
'an hour ago'
当然，它并不能准确地为您提供您正在寻找的答案（这确实是str(timeA - timeB)，但我发现一旦您超过几个小时，显示就会很快变得不可读。humanize支持更大的值，即人类可读，并且也很好地本地化。
显然，它受到 Djangocontrib.humanize模块的启发，所以既然您使用的是 Django，那么您可能应该使用它。
这是一个通用函数，用于将timedelta对象或常规数字（以秒或分钟等形式）转换为格式良好的字符串。我对一个重复的问题采取了mpounsett 的精彩回答，使其更加灵活，提高了可读性，并添加了文档。
您会发现这是迄今为止最灵活的答案，因为它允许您：
功能：
from string import Formatter
from datetime import timedelta
def strfdelta(tdelta, fmt='{D:02}d {H:02}h {M:02}m {S:02}s', inputtype='timedelta'):
"""Convert a datetime.timedelta object or a regular number to a custom-
formatted string, just like the stftime() method does for datetime.datetime
objects.
The fmt argument allows custom formatting to be specified. Fields can
include seconds, minutes, hours, days, and weeks. Each field is optional.
Some examples:
'{D:02}d {H:02}h {M:02}m {S:02}s' --> '05d 08h 04m 02s' (default)
'{W}w {D}d {H}:{M:02}:{S:02}' --> '4w 5d 8:04:02'
'{D:2}d {H:2}:{M:02}:{S:02}' --> ' 5d 8:04:02'
'{H}h {S}s' --> '72h 800s'
The inputtype argument allows tdelta to be a regular number instead of the
default, which is a datetime.timedelta object. Valid inputtype strings:
's', 'seconds',
'm', 'minutes',
'h', 'hours',
'd', 'days',
'w', 'weeks'
"""
# Convert tdelta to integer seconds.
if inputtype == 'timedelta':
remainder = int(tdelta.total_seconds())
elif inputtype in ['s', 'seconds']:
remainder = int(tdelta)
elif inputtype in ['m', 'minutes']:
remainder = int(tdelta)*60
elif inputtype in ['h', 'hours']:
remainder = int(tdelta)*3600
elif inputtype in ['d', 'days']:
remainder = int(tdelta)*86400
elif inputtype in ['w', 'weeks']:
remainder = int(tdelta)*604800
f = Formatter()
desired_fields = [field_tuple[1] for field_tuple in f.parse(fmt)]
possible_fields = ('W', 'D', 'H', 'M', 'S')
constants = {'W': 604800, 'D': 86400, 'H': 3600, 'M': 60, 'S': 1}
values = {}
for field in possible_fields:
if field in desired_fields and field in constants:
values[field], remainder = divmod(remainder, constants[field])
return f.format(fmt, **values)
演示：
>>> td = timedelta(days=2, hours=3, minutes=5, seconds=8, microseconds=340)
>>> print strfdelta(td)
02d 03h 05m 08s
>>> print strfdelta(td, '{D}d {H}:{M:02}:{S:02}')
2d 3:05:08
>>> print strfdelta(td, '{D:2}d {H:2}:{M:02}:{S:02}')
2d 3:05:08
>>> print strfdelta(td, '{H}h {S}s')
51h 308s
>>> print strfdelta(12304, inputtype='s')
00d 03h 25m 04s
>>> print strfdelta(620, '{H}:{M:02}', 'm')
10:20
>>> print strfdelta(49, '{D}d {H}h', 'h')
2d 1h
他已经有一个 timedelta 对象，为什么不使用它的内置方法 total_seconds() 将其转换为秒，然后使用 divmod() 获取小时和分钟？
hours, remainder = divmod(myTimeDelta.total_seconds(), 3600)
minutes, seconds = divmod(remainder, 60)
# Formatted only for hours and minutes as requested
print '%s:%s' % (hours, minutes)
无论时间增量是偶数天还是数年，这都有效。
我知道这是一个老问题，但我用datetime.utcfromtimestamp()这个。它需要秒数并返回一个datetime可以像任何其他datetime.
duration = datetime.utcfromtimestamp(end - begin)
print duration.strftime('%H:%M')
只要您在时间部分保持在合法范围内，这应该可以工作，即它不会返回 1234:35，因为小时数 <= 23。
我会在这里认真考虑奥卡姆剃刀方法：
td = str(timedelta).split('.')[0]
这将返回一个没有微秒的字符串
如果要重新生成 datetime.timedelta 对象，只需执行以下操作：
h,m,s = re.split(':', td)
new_delta = datetime.timedelta(hours=int(h),minutes=int(m),seconds=int(s))
2年了，我喜欢这种语言！
提问者想要一个比典型格式更好的格式：
>>> import datetime
>>> datetime.timedelta(seconds=41000)
datetime.timedelta(0, 41000)
>>> str(datetime.timedelta(seconds=41000))
'11:23:20'
>>> str(datetime.timedelta(seconds=4102.33))
'1:08:22.330000'
>>> str(datetime.timedelta(seconds=413302.33))
'4 days, 18:48:22.330000'
所以，实际上有两种格式，一种是天数为 0 并且被省略，另一种是文本“n days, h:m:s”。但是，秒可能有分数，并且打印输出中没有前导零，所以列很乱。
这是我的日常，如果你喜欢的话：
def printNiceTimeDelta(stime, etime):
delay = datetime.timedelta(seconds=(etime - stime))
if (delay.days > 0):
out = str(delay).replace(" days, ", ":")
else:
out = "0:" + str(delay)
outAr = out.split(':')
outAr = ["%02d" % (int(float(x))) for x in outAr]
out = ":".join(outAr)
return out
这会以 dd:hh:mm:ss 格式返回输出：
00:00:00:15
00:00:00:19
02:01:31:40
02:01:32:22
我确实考虑过为此增加几年，但这留给读者作为练习，因为输出在 1 年以上是安全的：
>>> str(datetime.timedelta(seconds=99999999))
'1157 days, 9:46:39'
我使用humanfriendlypython库来做到这一点，效果很好。
import humanfriendly
from datetime import timedelta
delta = timedelta(seconds = 321)
humanfriendly.format_timespan(delta)
'5 minutes and 21 seconds'
我的datetime.timedelta物品超过了一天。所以这里还有一个问题。上面的所有讨论都假设不到一天。Atimedelta实际上是天、秒和微秒的元组。上面的讨论应该td.seconds像 joe 一样使用，但如果你有几天，它不包含在 seconds 值中。
我在 2 个日期时间和打印天数和小时数之间得到一个时间跨度。
span = currentdt - previousdt
print '%d,%d\n' % (span.days,span.seconds/3600)
我有一个功能：
def period(delta, pattern):
d = {'d': delta.days}
d['h'], rem = divmod(delta.seconds, 3600)
d['m'], d['s'] = divmod(rem, 60)
return pattern.format(**d)
例子：
>>> td = timedelta(seconds=123456789)
>>> period(td, "{d} days {h}:{m}:{s}")
'1428 days 21:33:9'
>>> period(td, "{h} hours, {m} minutes and {s} seconds, {d} days")
'21 hours, 33 minutes and 9 seconds, 1428 days'
也许：
>>> import datetime
>>> dt0 = datetime.datetime(1,1,1)
>>> td = datetime.timedelta(minutes=34, hours=12, seconds=56)
>>> (dt0+td).strftime('%X')
'12:34:56'
>>> (dt0+td).strftime('%M:%S')
'34:56'
>>> (dt0+td).strftime('%H:%M')
'12:34'
>>>
按照上面乔的示例值，我将使用模算术运算符，因此：
td = datetime.timedelta(hours=10.56)
td_str = "%d:%d" % (td.seconds/3600, td.seconds%3600/60)
请注意，Python 中的整数除法默认向下舍入；如果您想更明确，请酌情使用 math.floor() 或 math.ceil()。
def seconds_to_time_left_string(total_seconds):
s = int(total_seconds)
years = s // 31104000
if years > 1:
return '%d years' % years
s = s - (years * 31104000)
months = s // 2592000
if years == 1:
r = 'one year'
if months > 0:
r += ' and %d months' % months
return r
if months > 1:
return '%d months' % months
s = s - (months * 2592000)
days = s // 86400
if months == 1:
r = 'one month'
if days > 0:
r += ' and %d days' % days
return r
if days > 1:
return '%d days' % days
s = s - (days * 86400)
hours = s // 3600
if days == 1:
r = 'one day'
if hours > 0:
r += ' and %d hours' % hours
return r
s = s - (hours * 3600)
minutes = s // 60
seconds = s - (minutes * 60)
if hours >= 6:
return '%d hours' % hours
if hours >= 1:
r = '%d hours' % hours
if hours == 1:
r = 'one hour'
if minutes > 0:
r += ' and %d minutes' % minutes
return r
if minutes == 1:
r = 'one minute'
if seconds > 0:
r += ' and %d seconds' % seconds
return r
if minutes == 0:
return '%d seconds' % seconds
if seconds == 0:
return '%d minutes' % minutes
return '%d minutes and %d seconds' % (minutes, seconds)
for i in range(10):
print pow(8, i), seconds_to_time_left_string(pow(8, i))
Output:
1 1 seconds
8 8 seconds
64 one minute and 4 seconds
512 8 minutes and 32 seconds
4096 one hour and 8 minutes
32768 9 hours
262144 3 days
2097152 24 days
16777216 6 months
134217728 4 years
针对此问题的直接模板过滤器。内置函数 int() 从不四舍五入。F-Strings（即 f''）需要 python 3.6。
@app_template_filter()
def diffTime(end, start):
diff = (end - start).total_seconds()
d = int(diff / 86400)
h = int((diff - (d * 86400)) / 3600)
m = int((diff - (d * 86400 + h * 3600)) / 60)
s = int((diff - (d * 86400 + h * 3600 + m *60)))
if d > 0:
fdiff = f'{d}d {h}h {m}m {s}s'
elif h > 0:
fdiff = f'{h}h {m}m {s}s'
elif m > 0:
fdiff = f'{m}m {s}s'
else:
fdiff = f'{s}s'
return fdiff
一个班轮。由于 timedeltas 不提供 datetime 的 strftime，因此将 timedelta 带回 datetime，并使用 stftime。
这不仅可以实现 OP 要求的格式 Hours:Minutes，现在您可以利用 datetime 的 strftime 的完整格式功能，如果您的要求更改为另一种表示。
import datetime
td = datetime.timedelta(hours=2, minutes=10, seconds=5)
print(td)
print(datetime.datetime.strftime(datetime.datetime.strptime(str(td), "%H:%M:%S"), "%H:%M"))
Output:
2:10:05
02:10
这也解决了时间增量被格式化为字符串为 H:MM:SS 而不是 HH:MM:SS 的烦恼，这导致我遇到了这个问题，以及我分享的解决方案。
我在工作中加班计算的输出也有类似的问题。该值应始终以 HH:MM 显示，即使它大于 1 天并且该值可能为负数。我结合了一些显示的解决方案，也许其他人发现这个解决方案很有用。我意识到，如果 timedelta 值为负，则使用 divmod 方法显示的大多数解决方案都不能开箱即用：
def td2HHMMstr(td):
'''Convert timedelta objects to a HH:MM string with (+/-) sign'''
if td < datetime.timedelta(seconds=0):
sign='-'
td = -td
else:
sign = ''
tdhours, rem = divmod(td.total_seconds(), 3600)
tdminutes, rem = divmod(rem, 60)
tdstr = '{}{:}:{:02d}'.format(sign, int(tdhours), int(tdminutes))
return tdstr
timedelta 到 HH:MM 字符串：
td2HHMMstr(datetime.timedelta(hours=1, minutes=45))
'1:54'
td2HHMMstr(datetime.timedelta(days=2, hours=3, minutes=2))
'51:02'
td2HHMMstr(datetime.timedelta(hours=-3, minutes=-2))
'-3:02'
td2HHMMstr(datetime.timedelta(days=-35, hours=-3, minutes=-2))
'-843:02'
import datetime
hours = datetime.timedelta(hours=16, minutes=30)
print((datetime.datetime(1,1,1) + hours).strftime('%H:%M'))
from django.utils.translation import ngettext
def localize_timedelta(delta):
ret = []
num_years = int(delta.days / 365)
if num_years > 0:
delta -= timedelta(days=num_years * 365)
ret.append(ngettext('%d year', '%d years', num_years) % num_years)
if delta.days > 0:
ret.append(ngettext('%d day', '%d days', delta.days) % delta.days)
num_hours = int(delta.seconds / 3600)
if num_hours > 0:
delta -= timedelta(hours=num_hours)
ret.append(ngettext('%d hour', '%d hours', num_hours) % num_hours)
num_minutes = int(delta.seconds / 60)
if num_minutes > 0:
ret.append(ngettext('%d minute', '%d minutes', num_minutes) % num_minutes)
return ' '.join(ret)
这将产生：
>>> from datetime import timedelta
>>> localize_timedelta(timedelta(days=3660, minutes=500))
'10 years 10 days 8 hours 20 minutes'
我继续MarredCheese 的回答并添加了year,month和millicesondmicrosecond
除了 之外，所有数字都被格式化为整数，因此可以自定义second秒的小数部分。
@kfmfe04 要求几分之一秒，所以我发布了这个解决方案
里面main有一些例子。
from string import Formatter
from datetime import timedelta
def strfdelta(tdelta, fmt='{D:02}d {H:02}h {M:02}m {S:02.0f}s', inputtype='timedelta'):
"""Convert a datetime.timedelta object or a regular number to a custom-
formatted string, just like the stftime() method does for datetime.datetime
objects.
The fmt argument allows custom formatting to be specified. Fields can
include seconds, minutes, hours, days, and weeks. Each field is optional.
Some examples:
'{D:02}d {H:02}h {M:02}m {S:02.0f}s' --> '05d 08h 04m 02s' (default)
'{W}w {D}d {H}:{M:02}:{S:02.0f}' --> '4w 5d 8:04:02'
'{D:2}d {H:2}:{M:02}:{S:02.0f}' --> ' 5d 8:04:02'
'{H}h {S:.0f}s' --> '72h 800s'
The inputtype argument allows tdelta to be a regular number instead of the
default, which is a datetime.timedelta object. Valid inputtype strings:
's', 'seconds',
'm', 'minutes',
'h', 'hours',
'd', 'days',
'w', 'weeks'
"""
# Convert tdelta to integer seconds.
if inputtype == 'timedelta':
remainder = tdelta.total_seconds()
elif inputtype in ['s', 'seconds']:
remainder = float(tdelta)
elif inputtype in ['m', 'minutes']:
remainder = float(tdelta)*60
elif inputtype in ['h', 'hours']:
remainder = float(tdelta)*3600
elif inputtype in ['d', 'days']:
remainder = float(tdelta)*86400
elif inputtype in ['w', 'weeks']:
remainder = float(tdelta)*604800
f = Formatter()
desired_fields = [field_tuple[1] for field_tuple in f.parse(fmt)]
possible_fields = ('Y','m','W', 'D', 'H', 'M', 'S', 'mS', 'µS')
constants = {'Y':86400*365.24,'m': 86400*30.44 ,'W': 604800, 'D': 86400, 'H': 3600, 'M': 60, 'S': 1, 'mS': 1/pow(10,3) , 'µS':1/pow(10,6)}
values = {}
for field in possible_fields:
if field in desired_fields and field in constants:
Quotient, remainder = divmod(remainder, constants[field])
values[field] = int(Quotient) if field != 'S' else Quotient + remainder
return f.format(fmt, **values)
if __name__ == "__main__":
td = timedelta(days=717, hours=3, minutes=5, seconds=8, microseconds=3549)
print(strfdelta(td,'{Y} years {m} months {W} weeks {D} days {H:02}:{M:02}:{S:02}'))
print(strfdelta(td,'{m} months {W} weeks {D} days {H:02}:{M:02}:{S:02.4f}'))
td = timedelta( seconds=8, microseconds=8549)
print(strfdelta(td,'{S} seconds {mS} milliseconds {µS} microseconds'))
print(strfdelta(td,'{S:.0f} seconds {mS} milliseconds {µS} microseconds'))
print(strfdelta(pow(10,7),inputtype='s'))
输出：
1 years 11 months 2 weeks 3 days 01:09:56.00354900211096
23 months 2 weeks 3 days 00:12:20.0035
8.008549 seconds 8 milliseconds 549 microseconds
8 seconds 8 milliseconds 549 microseconds
115d 17h 46m 40s
如果你碰巧有IPython你的包（你应该），它有（到目前为止，无论如何）一个非常好的持续时间格式化程序（以浮点秒为单位）。这在各个地方都有使用，例如%%time细胞魔法。我喜欢它在短时间内产生的格式：
>>> from IPython.core.magics.execution import _format_time
>>>
>>> for v in range(-9, 10, 2):
... dt = 1.25 * 10**v
... print(_format_time(dt))
1.25 ns
125 ns
12.5 µs
1.25 ms
125 ms
12.5 s
20min 50s
1d 10h 43min 20s
144d 16h 13min 20s
14467d 14h 13min 20s
这是一个字符串化 timedelta.total_seconds() 的函数。它适用于 python 2 和 3。
def strf_interval(seconds):
days, remainder = divmod(seconds, 86400)
hours, remainder = divmod(remainder, 3600)
minutes, seconds = divmod(remainder, 60)
return '{} {} {} {}'.format(
"" if int(days) == 0 else str(int(days)) + ' days',
"" if int(hours) == 0 else str(int(hours)) + ' hours',
"" if int(minutes) == 0 else str(int(minutes)) + ' mins',
"" if int(seconds) == 0 else str(int(seconds)) + ' secs'
)
示例输出：
>>> print(strf_interval(1))
1 secs
>>> print(strf_interval(100))
1 mins 40 secs
>>> print(strf_interval(1000))
16 mins 40 secs
>>> print(strf_interval(10000))
2 hours 46 mins 40 secs
>>> print(strf_interval(100000))
1 days 3 hours 46 mins 40 secs
请检查此功能 - 它将 timedelta 对象转换为字符串 'HH:MM:SS'
def format_timedelta(td):
hours, remainder = divmod(td.total_seconds(), 3600)
minutes, seconds = divmod(remainder, 60)
hours, minutes, seconds = int(hours), int(minutes), int(seconds)
if hours < 10:
hours = '0%s' % int(hours)
if minutes < 10:
minutes = '0%s' % minutes
if seconds < 10:
seconds = '0%s' % seconds
return '%s:%s:%s' % (hours, minutes, seconds)
如果您已经有一个 timedelta obj，那么只需将该 obj 转换为字符串。删除字符串的最后 3 个字符并打印。这将截断秒部分并以小时：分钟的格式打印其余部分。
t = str(timedeltaobj)
print t[:-3]
timedelta 到字符串，用于打印运行时间信息。
def strfdelta_round(tdelta, round_period='second'):
"""timedelta to string, use for measure running time
attend period from days downto smaller period, round to minimum period
omit zero value period
"""
period_names = ('day', 'hour', 'minute', 'second', 'millisecond')
if round_period not in period_names:
raise Exception(f'round_period "{round_period}" invalid, should be one of {",".join(period_names)}')
period_seconds = (86400, 3600, 60, 1, 1/pow(10,3))
period_desc = ('days', 'hours', 'mins', 'secs', 'msecs')
round_i = period_names.index(round_period)
s = ''
remainder = tdelta.total_seconds()
for i in range(len(period_names)):
q, remainder = divmod(remainder, period_seconds[i])
if int(q)>0:
if not len(s)==0:
s += ' '
s += f'{q:.0f} {period_desc[i]}'
if i==round_i:
break
if i==round_i+1:
s += f'{remainder} {period_desc[round_i]}'
break
return s
例如自动省略零前导期：
>>> td = timedelta(days=0, hours=2, minutes=5, seconds=8, microseconds=3549)
>>> strfdelta_round(td, 'second')
'2 hours 5 mins 8 secs'
或省略中间零期：
>>> td = timedelta(days=2, hours=0, minutes=5, seconds=8, microseconds=3549)
>>> strfdelta_round(td, 'millisecond')
'2 days 5 mins 8 secs 3 msecs'
或四舍五入到分钟，省略以下分钟：
>>> td = timedelta(days=1, hours=2, minutes=5, seconds=8, microseconds=3549)
>>> strfdelta_round(td, 'minute')
'1 days 2 hours 5 mins'
我想这样做，所以写了一个简单的函数。它对我很有用，而且用途广泛（支持年到微秒，以及任何粒度级别，例如，您可以在“2 天 4 小时 48 分钟”和“2 天 4 小时”和“2 天 4.8 小时”之间进行选择'， ETC。
def pretty_print_timedelta(t, max_components=None, max_decimal_places=2):
'''
Print a pretty string for a timedelta.
For example datetime.timedelta(days=2, seconds=17280) will be printed as '2 days, 4 hours, 48 minutes'. Setting max_components to e.g. 1 will change this to '2.2 days', where the
number of decimal points can also be set.
'''
time_scales = [timedelta(days=365), timedelta(days=1), timedelta(hours=1), timedelta(minutes=1), timedelta(seconds=1), timedelta(microseconds=1000), timedelta(microseconds=1)]
time_scale_names_dict = {timedelta(days=365): 'year',
timedelta(days=1): 'day',
timedelta(hours=1): 'hour',
timedelta(minutes=1): 'minute',
timedelta(seconds=1): 'second',
timedelta(microseconds=1000): 'millisecond',
timedelta(microseconds=1): 'microsecond'}
count = 0
txt = ''
first = True
for scale in time_scales:
if t >= scale:
count += 1
if count == max_components:
n = t / scale
else:
n = int(t / scale)
t -= n*scale
n_txt = str(round(n, max_decimal_places))
if n_txt[-2:]=='.0': n_txt = n_txt[:-2]
txt += '{}{} {}{}'.format('' if first else ', ', n_txt, time_scale_names_dict[scale], 's' if n>1 else '', )
if first:
first = False
if len(txt) == 0:
txt = 'none'
return txt
我建议以下方法，以便我们可以使用标准格式化功能，pandas.Timestamp.strftime！
from pandas import Timestamp, Timedelta
(Timedelta("2 hours 30 min") + Timestamp("00:00:00")).strftime("%H:%M")
# Format seconds to days, hours, minutes and seconds string
def ptime(seconds):
if(seconds >= 86400):
d = seconds // 86400 # // floor division
return (f"{round(d)}d") + ptime(seconds - d * 86400)
else:
if(seconds >= 3600):
h = seconds // 3600
return (f"{round(h)}h") + ptime(seconds - h * 3600)
else:
if(seconds >= 60):
m = seconds // 60
return(f"{round(m)}m" + ptime(seconds - m * 60))
else:
if (seconds > 0):
return(f"{round(seconds)}s")
else:
return("")
t1 = datetime.datetime.strptime(StartTime, "%H:%M:%S %d-%m-%y")
t2 = datetime.datetime.strptime(EndTime, "%H:%M:%S %d-%m-%y")
return str(t2-t1)
因此对于：
StartTime = '15:28:53 21-07-13'
EndTime = '15:32:40 21-07-13'
返回：
'0:03:47'
感谢大家的帮助。我吸收了你的许多想法并将它们放在一起，让我知道你的想法。
我在类中添加了两个方法，如下所示：
def hours(self):
retval = ""
if self.totalTime:
hoursfloat = self.totalTime.seconds / 3600
retval = round(hoursfloat)
return retval
def minutes(self):
retval = ""
if self.totalTime:
minutesfloat = self.totalTime.seconds / 60
hoursAsMinutes = self.hours() * 60
retval = round(minutesfloat - hoursAsMinutes)
return retval
在我的 django 中，我使用了这个（sum 是对象，它在字典中）：
<td>{{ sum.0 }}</td>
<td>{{ sum.1.hours|stringformat:"d" }}:{{ sum.1.minutes|stringformat:"#02.0d" }}</td>