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Date: Mon, 12 Jan 2015 19:09:45 +0530
Subject: Re: Few Coding suggestions - resending
From: Ganesh Pal <ganesh1pal@gmail.com>
To: Dave Angel <davea@davea.name>
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Thanks to all and  dear Dave Angel, I got this working :)  , using
your valuable  inputs .

Here is the final program:
Throttling-1# cat sleep_schedule_file.py
#!/usr/bin/python
import time
import pdb
from datetime import date, time, datetime, timedelta

#'''run these on the remote commmand '''

n =3D datetime.now()
h =3D n.strftime("%H")
m =3D n.strftime("%M")
d =3D date.today()

#''' get the sleep_schedule_structure '''

def yield_times():
    start =3D datetime.combine(d, time(int(h),int(m)))
    end =3D datetime.combine(d, time(int(h),int(m)))
    while True:
        start +=3D timedelta(minutes=3D4)
        end =3D start + timedelta(minutes=3D2)
        yield(start.strftime("%A"),start.strftime("%H:%M"),end.strftime("%H=
:%M"))
gen =3D yield_times()

f =3D open('/tmp/sleep_sched.conf','wb')
for ii in range(10):
     a,b,c =3D gen.next()
     res =3D "{0} {1} {2} \n".format(a,b,c)
     print res,
     f.write(res)

f.close()

Gpal

On Mon, Jan 12, 2015 at 3:23 PM, Ganesh Pal <ganesh1pal@gmail.com> wrote:
> On Mon, Jan 12, 2015 at 8:42 AM, Ganesh Pal <ganesh1pal@gmail.com> wrote:
>> On Sun, Jan 11, 2015 at 7:57 PM, Dave Angel <davea@davea.name> wrote:
>>>>
>>>>
>>> No idea how that represents "a difference of 5 minutes".  So I'll take =
a totally wild guess that you meant:
>>>
>>> Sunday 23:50 23:55
>>> Monday 00:00 00:05
>>> Monday 00:10 00:15
>>> Monday 00:20 00:25
>>> Monday 00:30 00:35
>>>
>>> which would have the 2nd column 5 minutes after the first.
>>>
>>> You need another datetime object, let's call it 'end'
>>>
>>> end =3D start + timedelta(minutes=3D5)
>>>
>>> and now you want to yield three things, in a tuple:
>>>
>>> yield (start.strftime("%A"), start.strftime("%H:%M"),
>>>    end.strftime("%H:%M"))
>>>
>>> Of course that's a pain to do twice, as you have two yields in that fun=
ction.  I'll leave you to reorder the loop to make that unnecessary.  Hint,=
 do the yield first, THEN increment the start variable.
>>
>> Thanks for the inputs , I tried doing the increments and decrements
>> first and then Yield
>>
>>  Program:
>>
>>   Login-1@SNAP-BOX-1 new]$ cat time_range_01.py
>> #!/usr/bin/python
>> import time
>> from datetime import date, time, datetime, timedelta
>> #h =3D datetime.strftime("%H")
>> #m =3D datetime.strftime("%M")
>> h=3D23
>> m=3D50
>> d =3D date.today()
>> print d
>>
>> def yield_times():
>>     global  h,m,d
>>     start =3D datetime.combine(d, time(int(h),int(m)))
>>     end =3D datetime.combine(d, time(int(h),int(m)))
>>     while True:
>>         start +=3D timedelta(minutes=3D10)
>>         end =3D start + timedelta(minutes=3D5)
>>         yield(start.strftime("%A"),start.strftime("%H:%M"),end.strftime(=
"%H:%M"))
>> gen =3D yield_times()
>> for i in range(10):
>>     print gen.next()
>>
>> output :
>> [Login-1@SNAP-BOX-1 new]$ python time_range_01.py
>> 2015-01-12
>> ('Tuesday', '00:00', '00:05')
>> ('Tuesday', '00:10', '00:15')
>> ('Tuesday', '00:20', '00:25')
>> ('Tuesday', '00:30', '00:35')
>> ('Tuesday', '00:40', '00:45')
>> ('Tuesday', '00:50', '00:55')
>> ('Tuesday', '01:00', '01:05')
>> ('Tuesday', '01:10', '01:15')
>> ('Tuesday', '01:20', '01:25')
>> ('Tuesday', '01:30', '01:35')
>>
>> PS :   Except formatting the results looks pretty much what i was
>> expecting .I was pretty much happy to see this last night :) .
>>
>>
>>> and in the other loop, you want
>>>     res =3D "{} {} {}\n".format(gen.next)
>>>     print res,
>>>
>>>>
>>
>> Thanks ,  I will have to modify for the new output
>>
>>>> (b)  how to copy the above output (i.e with the new column to a file.)
>>>>
>>>
>>> Instead of printing, just do f.write(res).  Or do both. Notice that to =
make this easy, i avoided doing any formatting in the print statement. I us=
ed a trailing comma on it to avoid print adding a newline, and instead put =
it explicitly in the format method call.
>>>
>>>>
>>
>> Sure
>>
>>>> (c)  The  final output should be a file , having the entries  day ,
>>>> start , end time of the remote file. how do  i pass the  this to
>>>> yeild-times()
>>>>
>>>> import time
>>>>
>>>> /* Assuming I retrive the below values h,m,d from the remote machine*/
>>>>
>>>> h =3D time.strftime("%H")
>>>> m =3D time.strftime("%M")
>>>> d =3D date.today()
>>>>
>>>
>>> Those first two are strings, but the third is a datetime object.  That =
last can be painful to pass between machines.
>>
>> Correct , also looks like I have another issue , if I happen to pass
>> the first two strings
>>
>> #  instead hard coded value i.e h =3D 23 and y =3D50 , i try using the
>> string directly I end up getting the below error :
>>
>> h =3D datetime.strftime("%H")
>> m =3D datetime.strftime("%M")
>>
>> [Login-1@SNAP-BOX-1 new]$ python  time_range_01.py
>> Traceback (most recent call last):
>>   File "time_range_01.py", line 4, in <module>
>>     h =3D datetime.strftime("%H")
>> TypeError: descriptor 'strftime' requires a 'datetime.date' object but
>> received a 'str'
>>
>> The date time object is retrieved once once from the remote machine
>> and just for building the file in the required format.
>> Do you foresee any problems using this ?
>>
>>>
>>>>
>>>> def yield_times():
>>>>        global h,m,d
>>>
>>>
>>> No idea what that's all about.  If you want to pass arguments to yield_=
times(), put them inside the parens.
>>>
>> sure .
>>
>> Regards,
>> Gpal