[Patches] [ python-Patches-1665292 ] Datetime enhancements

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Patches item #1665292, was opened at 2007-02-21 15:55
Message generated for change (Comment added) made by tiran
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Category: Library (Lib)
Group: Python 2.6
Status: Closed
Resolution: Rejected
Priority: 5
Private: No
Submitted By: Christian Heimes (tiran)
Assigned to: Nobody/Anonymous (nobody)
Summary: Datetime enhancements

Initial Comment:
I'm proposing some small enhancements to the datetime module:

Add a totimestamp() method to datetime.datetime that returns the seconds since 1/1/1970 00:00:00. The datetime class has already a fromtimestamp() factory but is missing a totimestamp() method.

Add a __int__() and __float__() method to datetime.timedelta which return the seconds (seconds + 86400 * days) as int and seconds + miliseconds as float. It would save some typing if somebody needs an integer representation of a timedelta object :]

The datetime module is implemented in C. I've never written a Python C extension so I can't help with a patch.

Thx

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>Comment By: Christian Heimes (tiran)
Date: 2007-07-12 16:46

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Oh, I didn't know that hash() *AND* == are used in dictionaries. Well, you
are the experts and I'm just a noob. :)

I'm going to remove the compare part from my patch. I still like to get
int(td) and float(td) into Python. I find it very useful.

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Comment By: Georg Brandl (gbrandl)
Date: 2007-07-12 10:22

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Agreed. (A separate patch can be submitted for totimestamp().)

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Comment By: Björn Lindqvist (sonderblade)
Date: 2007-06-06 18:52

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Seems like it is safe to close this patch. If you need a timedelta in
seconds it isn't that much work to write td.days*86400+td.seconds to
convert it to an int. Converting it to a float doesn't seem useful enough.

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Comment By: Jason Orendorff (jorend)
Date: 2007-04-21 00:19

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tiran, having timedelta objects comparable with numbers is going a bit too
far.  You end up with:

timedelta(0, 1) == 1   but   hash(timedelta(0, 1)) != hash(1)

This breaks dictionaries.


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Comment By: Christian Heimes (tiran)
Date: 2007-03-23 03:38

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Here is a new patch. I've updated the documentation and enhanced the
compare function to compare with ints, longs and floats. This part of the
patch should be complete. I'm going to submit a different patch for the
other features later. Shall I start a new tracker entry?
File Added: timedelta_intfloat.diff

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Comment By: Johann C. Rocholl (jcrocholl)
Date: 2007-03-09 17:33

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The patch confuses microseconds with milliseconds.
The divisor in delta_float should be 1000000.0, not 1000.0.
The result of the last test should be 86401.000001, not 86401.001.

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Comment By: Christian Heimes (tiran)
Date: 2007-02-21 17:16

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File Added: timedelta.patch

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