Comparing a time delta in python
I have a variable which is <type 'datetime.timedelta'>
and I would like to compare it against certain values.
Lets say d produces this datetime.timedelta
value 0:00:01.782000
I would like to compare it like this:
#if d is greater than 1 minute
if d>1:00:
print "elapsed time is greater than 1 minute"
I have tried converting datetime.timedelta.strptime()
but that does seem to work. Is there an easier way to compare thi开发者_开发问答s value?
You'll have to create a new timedelta
with the specified amount of time:
d > timedelta(minutes=1)
Or this slightly more complete script will help elaborate:
import datetime
from time import sleep
start = datetime.datetime.now()
sleep(3)
stop = datetime.datetime.now()
elapsed = stop - start
if elapsed > datetime.timedelta(minutes=1):
print "Slept for > 1 minute"
if elapsed > datetime.timedelta(seconds=1):
print "Slept for > 1 second"
Output:
Slept for > 1 second
You just need to create timedelta
object from scratch, comparison after that is trivial:
>>> a = datetime.timedelta(minutes=1)
>>> b = datetime.timedelta(minutes=1, seconds=1)
>>> a < b
True
>>> a > b
False
Correct me if I'm wrong but I think that you could also use the following:
Instead of
if elapsed > datetime.timedelta(seconds=1):
You could say
if elapsed.seconds > 1:
if d.total_seconds() > 60:
print("elapsed time is greater than 1 minute")
but it requires python 2.7+
精彩评论