Re: [Tutor] Formating from hhmms to hh:mm:ss

Sun, 07 Sep 2008 19:29:38 -0700

Title: Signature.html
Yep, I tried strptime and strftime but got stuck too often on something or other (mostly mixing time, datetime somehow), so simplified matters to make it clear what I was trying to do.

I'm sure you have the essence below, but I'm not familiar with the In/ Out notation. Apparently, I need to scoop up the In lines into a file and add some print stmts for the In[x] d lines.

Here's what I think I should put in a py file and the results:
# Using datetime to do date-time math on a file date-time stamp and
# the creating the new stamp
from datetime import datetime, timedelta

format = '%Y%m%d_%H%M%S'
d=datetime.strptime('20080321_113405', format)
print d
datetime.datetime(2008, 3, 21, 11, 34, 5)
d += timedelta(seconds=200)
print d
datetime.datetime(2008, 3, 21, 11, 37, 25)
print d.strftime(format)
Results:
Traceback (most recent call last):
  File "C:/Sandia_Meteors/Improved_Sentinel/Sentinel_Playground/Utility_Dev/debugDateTime.py", line 6, in ?
    d=datetime.strptime('20080321_113405', format)
AttributeError: type object 'datetime.datetime' has no attribute 'strptime
This attribute problem is reminiscent of my problems. IDLE? Python 2.4.x?
Kent Johnson wrote: 
On Sun, Sep 7, 2008 at 9:33 PM, Wayne Watson
<[EMAIL PROTECTED]> wrote:
  
Here's as far as I can go with this. The last line of output asks the
question I need an answer for.
(Once again my direct post to [email protected] has failed to appear here
(sent 5:42 PDT), as before.)
    

It arrived late for some reason.

You can do what you want much more simply using datetime.strptime()
and strftime():
In [2]: from datetime import datetime, timedelta
In [3]: format = '%Y%m%d_%H%M%S'
In [8]: d=datetime.strptime('20080321_113405', format)
In [10]: d
Out[10]: datetime.datetime(2008, 3, 21, 11, 34, 5)
In [13]: d += timedelta(seconds=200)
In [14]: d
Out[14]: datetime.datetime(2008, 3, 21, 11, 37, 25)
In [15]: d.strftime(format)
Out[15]: '20080321_113725'

Kent

-- 
           Wayne Watson (Watson Adventures, Prop., Nevada City, CA)

             (121.015 Deg. W, 39.262 Deg. N) GMT-8 hr std. time)
              Obz Site:  39° 15' 7" N, 121° 2' 32" W, 2700 feet
            
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