Re: Date Comparison and Manipulation Functions?
The author has updated the Tutorial and added a flex method. -- http://mail.python.org/mailman/listinfo/python-list
Re: Date Comparison and Manipulation Functions?
John Machin wrote: On Aug 30, 10:41 am, "W. eWatson" <[EMAIL PROTECTED]> wrote: What I'm trying to do is adjust date-time stamped file names for date and time errors. The software program collects through a period that roughly coincides with night hours every day and according to the OS clock. It sometimes happens that a user sets the clock to the wrong day or hour, possibly both. Possibly even the month or year. I'm trying to allow a user the opportunity to repair the problem. (Date-time stamp part of the name is mmdd_hhmmss.) Correcting the date needs to be done easily and accurately. For example, if on August 25, he mistakenly sets the date to July 25, and discovers this problem on the real Oct. 5, he should be able to shift all dates from July 25 through Sept. 5 to Aug. 25 through early Oct., allowing for day oddities in a month during the period. (I hope I got those dates right; otherwise, I think you get the idea. In other words, he needs to shift about 40 days of data to the correct dates.) ... all of which is absolutely nothing to do with your surprise at the result of whatever.plus(months=6). Really? It opened new insights for me. The example above is not the only correction I need to deal with. Further, the author is likely to soon clarify some of the date rules in the tutorial that were not obvious nor mentioned there. So for some period from recorded date X to recorded date Y, the recorded dates of out of kilter by D days. X = Jul 25 2008, Y Sep 5 2008, and D is 31 (days from Jul 25 to Aug 25). All you have to do is (pseudocode): if X <= recorded_date <= Y: new_recorded_date = recorded_date.plus(days=D) HTH, John -- W. Watson (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 -- http://mail.python.org/mailman/listinfo/python-list
Re: Date Comparison and Manipulation Functions?
W. eWatson wrote: John Machin wrote: On Aug 30, 10:41 am, "W. eWatson" <[EMAIL PROTECTED]> wrote: What I'm trying to do is adjust date-time stamped file names for date and time errors. The software program collects through a period that roughly coincides with night hours every day and according to the OS clock. It sometimes happens that a user sets the clock to the wrong day or hour, possibly both. Possibly even the month or year. I'm trying to allow a user the opportunity to repair the problem. (Date-time stamp part of the name is mmdd_hhmmss.) Correcting the date needs to be done easily and accurately. For example, if on August 25, he mistakenly sets the date to July 25, and discovers this problem on the real Oct. 5, he should be able to shift all dates from July 25 through Sept. 5 to Aug. 25 through early Oct., allowing for day oddities in a month during the period. (I hope I got those dates right; otherwise, I think you get the idea. In other words, he needs to shift about 40 days of data to the correct dates.) ... all of which is absolutely nothing to do with your surprise at the result of whatever.plus(months=6). Really? It opened new insights for me. The example above is not the only correction I need to deal with. Further, the author is likely to soon clarify some of the date rules in the tutorial that were not obvious or mentioned there. So for some period from recorded date X to recorded date Y, the recorded dates of out of kilter by D days. X = Jul 25 2008, Y Sep 5 2008, and D is 31 (days from Jul 25 to Aug 25). All you have to do is (pseudocode): if X <= recorded_date <= Y: new_recorded_date = recorded_date.plus(days=D) HTH, John Strange how my post got hooked into this side spur. I'll re-post. -- W. Watson (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 -- http://mail.python.org/mailman/listinfo/python-list
Re: Date Comparison and Manipulation Functions?
John Machin wrote: On Aug 30, 10:41 am, "W. eWatson" <[EMAIL PROTECTED]> wrote: What I'm trying to do is adjust date-time stamped file names for date and time errors. The software program collects through a period that roughly coincides with night hours every day and according to the OS clock. It sometimes happens that a user sets the clock to the wrong day or hour, possibly both. Possibly even the month or year. I'm trying to allow a user the opportunity to repair the problem. (Date-time stamp part of the name is mmdd_hhmmss.) Correcting the date needs to be done easily and accurately. For example, if on August 25, he mistakenly sets the date to July 25, and discovers this problem on the real Oct. 5, he should be able to shift all dates from July 25 through Sept. 5 to Aug. 25 through early Oct., allowing for day oddities in a month during the period. (I hope I got those dates right; otherwise, I think you get the idea. In other words, he needs to shift about 40 days of data to the correct dates.) ... all of which is absolutely nothing to do with your surprise at the result of whatever.plus(months=6). Really? It opened new insights for me. The example above is not the only correction I need to deal with. Further, the author is likely to soon clarify some of the date rules in the tutorial that were not obvious or mentioned there. So for some period from recorded date X to recorded date Y, the recorded dates of out of kilter by D days. X = Jul 25 2008, Y Sep 5 2008, and D is 31 (days from Jul 25 to Aug 25). All you have to do is (pseudocode): if X <= recorded_date <= Y: new_recorded_date = recorded_date.plus(days=D) HTH, John -- W. Watson (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 -- http://mail.python.org/mailman/listinfo/python-list
Re: Date Comparison and Manipulation Functions?
John Machin wrote: >On Aug 30, 10:41 am, "W. eWatson" wrote: > >> What I'm trying to do is adjust date-time stamped file names for date and >> time errors. The software program collects through a period that roughly >> coincides with night hours every day and according to the OS clock. It >> sometimes happens that a user sets the clock to the wrong day or hour, >> possibly both. Possibly even the month or year. I'm trying to allow a user >> the opportunity to repair the problem. (Date-time stamp part of the name is >> mmdd_hhmmss.) Correcting the date needs to be done easily and >> accurately. For example, if on August 25, he mistakenly sets the date to >> July 25, and discovers this problem on the real Oct. 5, he should be able to >> shift all dates from July 25 through Sept. 5 to Aug. 25 through early Oct., >> allowing for day oddities in a month during the period. (I hope I got those >> dates right; otherwise, I think you get the idea. In other words, he needs >> to shift about 40 days of data to the correct dates.) > >... all of which is absolutely nothing to do with your surprise at the >result of whatever.plus(months=6). > >So for some period from recorded date X to recorded date Y, the >recorded dates of out of kilter by D days. X = Jul 25 2008, Y Sep 5 >2008, and D is 31 (days from Jul 25 to Aug 25). All you have to do is >(pseudocode): > >if X <= recorded_date <= Y: >new_recorded_date = recorded_date.plus(days=D) > This will work nicely for negative values of D. The case of positive D values is more of a toffee: Its Wednesday and I make some observations. Its Thursday and I "fix" my clock - system thinks its Wednesday again. I make some observations - Either overwriting or adding to the original Wednesdays stuff. Its Friday and I spot the error - my D value is 1 day. I need to split the "Wednesday" file into two bits, if I can, and apply the correction to the second half, else I will have a gap for Wednesday. Depending on how the logging is done, it may be an unchewable toffee. - Hendrik -- http://mail.python.org/mailman/listinfo/python-list
Re: Date Comparison and Manipulation Functions?
On Aug 30, 10:41 am, "W. eWatson" <[EMAIL PROTECTED]> wrote: > What I'm trying to do is adjust date-time stamped file names for date and > time errors. The software program collects through a period that roughly > coincides with night hours every day and according to the OS clock. It > sometimes happens that a user sets the clock to the wrong day or hour, > possibly both. Possibly even the month or year. I'm trying to allow a user > the opportunity to repair the problem. (Date-time stamp part of the name is > mmdd_hhmmss.) Correcting the date needs to be done easily and > accurately. For example, if on August 25, he mistakenly sets the date to > July 25, and discovers this problem on the real Oct. 5, he should be able to > shift all dates from July 25 through Sept. 5 to Aug. 25 through early Oct., > allowing for day oddities in a month during the period. (I hope I got those > dates right; otherwise, I think you get the idea. In other words, he needs > to shift about 40 days of data to the correct dates.) ... all of which is absolutely nothing to do with your surprise at the result of whatever.plus(months=6). So for some period from recorded date X to recorded date Y, the recorded dates of out of kilter by D days. X = Jul 25 2008, Y Sep 5 2008, and D is 31 (days from Jul 25 to Aug 25). All you have to do is (pseudocode): if X <= recorded_date <= Y: new_recorded_date = recorded_date.plus(days=D) HTH, John -- http://mail.python.org/mailman/listinfo/python-list
Re: Date Comparison and Manipulation Functions?
John Machin wrote: On Aug 30, 2:32 am, "W. eWatson" <[EMAIL PROTECTED]> wrote: I just tried the following code, and got an unexpected result. from pyfdate import * t = Time() ts = Time(2008, 8, 29,15,20,7) tnew = ts.plus(months=6) print "new date: ", tnew Result: new date: 2009-02-28 15:20:07 I believe that should be April 1, 2009. Presuming that we are talking about the Gregorian calendar, and not one of your own invention, you are (one trusts) alone in that belief. There are SEVEN whole months and a bit between August 29, 2008 and April 1, 2009. Count the months: Sep, Oct, Nov, Dec, Jan, Feb, Mar. If I use months = 1 and day =31, I get Sept. 30, 2008 and not Oct. 1, 2008. Is there a way to get around this? Because the number of days in a month is not constant, adding a number of months to a date is capable of more than one interpretation. Most folk are happy with adding the months on and then ensuring that the day is not later than the last day of the resultant (year, month) combination -- this is what the pyfdate routine appears to be doing. However there are some interesting ideas floating around e.g. IIRC an eminent personage once asserted in this newsgroup that adding 1 month to 31 Jan in a non-leap year should produce 3 Mar. There is also the general question with date intervals of whether the first day is included in the calculation or not. E.g. work on Monday, Tuesday, Wednesday: that's 3 days service. Put money into the bank on Monday, withdraw it on Wednesday: that's likely to attract 2 days interest. One needs to understand exactly what calculation is required, and exactly what calculation is provided by the software that is proposed to be used. HTH, John What I'm trying to do is adjust date-time stamped file names for date and time errors. The software program collects through a period that roughly coincides with night hours every day and according to the OS clock. It sometimes happens that a user sets the clock to the wrong day or hour, possibly both. Possibly even the month or year. I'm trying to allow a user the opportunity to repair the problem. (Date-time stamp part of the name is mmdd_hhmmss.) Correcting the date needs to be done easily and accurately. For example, if on August 25, he mistakenly sets the date to July 25, and discovers this problem on the real Oct. 5, he should be able to shift all dates from July 25 through Sept. 5 to Aug. 25 through early Oct., allowing for day oddities in a month during the period. (I hope I got those dates right; otherwise, I think you get the idea. In other words, he needs to shift about 40 days of data to the correct dates.) Or: True calendar period: August 25 to Oct. 5 Recorded calendar period: July 25 to Sept. 5 (roughly 5) A second function is to correct the time stamp for drift in the clock. For this, I'm expecting the user knows the daily drift, +/-, in seconds of the clock. When he decides, for example, that he's let the clock drift for more than, say, 120 seconds, he may want to adjust the time stamp for all files collected since the last time he set the clock properly. About the best anyone can hope for is that the data is accurate to within 4 to 5 seconds, so over periods of say a month between adjustments this should be OK. The computers used do not have time data other than that provided by the h/w clock on the computer. This method is not meant to be a cure all, just to get the time stamp within a reasonable value. Personally, I reset the time about every 2-3 weeks. Problems that arise here are associated with working near midnight. Again, it's possible to set some time or date component incorrectly each time one needs to get drift under control. The OSes involved can be Win XP, Win 2000, or even older Win OSes, varieties of Apple and Linux. I don't want to go below the level of the simple h/w clock a typical user might have access to through the OS s/w user interface. However, I do not need to get into OS details to solve the above problems. There are of course times when a mistaken setting is caught early, so the adjustment becomes easy. Suppose the day is taken as May 3 on May 5, and two days later the mistake is noticed. Changing the date for these files is pretty easy (with the program). Well, back to the drawing board for awhile to see how this plays against pyfdate. -- W. Watson (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 -- http://mail.python.org/mailman/listinfo/python-list
Re: Date Comparison and Manipulation Functions?
On Aug 30, 2:32 am, "W. eWatson" <[EMAIL PROTECTED]> wrote: > I just tried the following code, and got an unexpected result. > > from pyfdate import * > t = Time() > > ts = Time(2008, 8, 29,15,20,7) > tnew = ts.plus(months=6) > print "new date: ", tnew > > Result: > new date: 2009-02-28 15:20:07 > > I believe that should be April 1, 2009. Presuming that we are talking about the Gregorian calendar, and not one of your own invention, you are (one trusts) alone in that belief. There are SEVEN whole months and a bit between August 29, 2008 and April 1, 2009. Count the months: Sep, Oct, Nov, Dec, Jan, Feb, Mar. > If I use months = 1 and day =31, I > get Sept. 30, 2008 and not Oct. 1, 2008. Is there a way to get around this? Because the number of days in a month is not constant, adding a number of months to a date is capable of more than one interpretation. Most folk are happy with adding the months on and then ensuring that the day is not later than the last day of the resultant (year, month) combination -- this is what the pyfdate routine appears to be doing. However there are some interesting ideas floating around e.g. IIRC an eminent personage once asserted in this newsgroup that adding 1 month to 31 Jan in a non-leap year should produce 3 Mar. There is also the general question with date intervals of whether the first day is included in the calculation or not. E.g. work on Monday, Tuesday, Wednesday: that's 3 days service. Put money into the bank on Monday, withdraw it on Wednesday: that's likely to attract 2 days interest. One needs to understand exactly what calculation is required, and exactly what calculation is provided by the software that is proposed to be used. HTH, John -- http://mail.python.org/mailman/listinfo/python-list
Re: Date Comparison and Manipulation Functions?
W. eWatson wrote: I just tried the following code, and got an unexpected result. from pyfdate import * t = Time() ts = Time(2008, 8, 29,15,20,7) tnew = ts.plus(months=6) print "new date: ", tnew Result: new date: 2009-02-28 15:20:07 I believe that should be April 1, 2009. If I use months = 1 and day =31, I get Sept. 30, 2008 and not Oct. 1, 2008. Is there a way to get around this? === Hu The old 'ditty' to help remember: Thirty days have September, April, June and November All the rest have 31 except February Which has but 28 'til Leap Year gives it 29 and: 2008 08 29 DOY = 242366 in year 2009 03 01 DOY = 60 366-242 = 124 + 60 = 184 - 1 (we don't count today) = 183 30 + 31 + 30 + 31 + 31 + 28 + 2 (left in aug.) = 183 SONDJFA 366+60-242-1(for today)=183 Puts us on 2009 Feb. 28 case #2: I think something is described other than as used. 08 29 01 31 - 09 60 2008 09 01 DOY = 245 245 + 60 -1(today) = 304 which is DOY for 2008 10 30 or (depending on what the written meant) 08 31 01 00 - 09 31 2008 09 00 DOY = 245 245 + 31 -1(today) = 274 = 2008 Sept. 30 pyfdate is using actual days per month and DOY to compute. It's not quite the same as the 'rule of thumb' that is in general public use - but it is accurate. Most of us would just add the months and use the day or one close to it. Steve [EMAIL PROTECTED] -- http://mail.python.org/mailman/listinfo/python-list
Re: Date Comparison and Manipulation Functions?
I just tried the following code, and got an unexpected result. from pyfdate import * t = Time() ts = Time(2008, 8, 29,15,20,7) tnew = ts.plus(months=6) print "new date: ", tnew Result: new date: 2009-02-28 15:20:07 I believe that should be April 1, 2009. If I use months = 1 and day =31, I get Sept. 30, 2008 and not Oct. 1, 2008. Is there a way to get around this? -- W. Watson (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 -- http://mail.python.org/mailman/listinfo/python-list
Re: Date Comparison and Manipulation Functions?
John Machin wrote: On Aug 27, 11:24 am, "W. eWatson" <[EMAIL PROTECTED]> wrote: John Machin wrote: On Aug 27, 10:21 am, "W. eWatson" <[EMAIL PROTECTED]> wrote: I'm using IDLE for Python 2.4, and put pfydate distribution in C:\Python24\Lib\site-packages\pfydate, as required by the page. How to install pyfdate. Save pyfdate.py into your PythonNN/Lib/site-packages directory. I copied it into C:\Python24\Lib\site-packages\pfydate If that means that you ended up with C:\Python24\Lib\site-packages\pfydate\pyfdate.py then you have *not* followed the instructions "Save pyfdate.py into your PythonNN/Lib/site-packages directory". You need to end up with C:\Python24\Lib\site-packages\pyfdate.py None of the folders in C:\Python24\Lib\site-packages\ have py as a suffix (as seen either by the IDLE path browser or XP). My folder is exactly C:\Python24\Lib\site-packages\pfydate in XP and it contains about 12 py files. There are exactly three folders under C:\Python24\Lib\site-packages\ according to the IDLE path browser. This does not agree with XP, which has: Numeric pfydate scipy numpy PIL (1) "pfydate" != "pyfdate" typo (2) The instructions say to put pyfdate.py [that's *ONE* file, not 12 files] in the /site-packages folder, *not* a sub-folder Got it. Ah, I see upon closer inspection the other files are just international versions. Thanks. It works. -- 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 Web Page: -- http://mail.python.org/mailman/listinfo/python-list
Re: Date Comparison and Manipulation Functions?
On Aug 27, 11:24 am, "W. eWatson" <[EMAIL PROTECTED]> wrote: > John Machin wrote: > > On Aug 27, 10:21 am, "W. eWatson" <[EMAIL PROTECTED]> wrote: > >> I'm using IDLE for Python 2.4, and put pfydate distribution in > >> C:\Python24\Lib\site-packages\pfydate, as required by the > >> page. > >> How to install pyfdate. > > >> Save pyfdate.py into your PythonNN/Lib/site-packages directory. > >> I copied it into C:\Python24\Lib\site-packages\pfydate > > > If that means that you ended up with > > C:\Python24\Lib\site-packages\pfydate\pyfdate.py > > then you have *not* followed the instructions "Save pyfdate.py into > > your PythonNN/Lib/site-packages directory". > > You need to end up with > > C:\Python24\Lib\site-packages\pyfdate.py > > None of the folders in C:\Python24\Lib\site-packages\ have py as a suffix > (as seen either by the IDLE path browser or XP). My folder is exactly > C:\Python24\Lib\site-packages\pfydate in XP and it contains about 12 py files. > There are exactly three folders under > C:\Python24\Lib\site-packages\ according to the IDLE path browser. This does > not agree with XP, which has: > Numeric > pfydate > scipy > numpy > PIL (1) "pfydate" != "pyfdate" (2) The instructions say to put pyfdate.py [that's *ONE* file, not 12 files] in the /site-packages folder, *not* a sub-folder -- http://mail.python.org/mailman/listinfo/python-list
Re: Date Comparison and Manipulation Functions?
On Tue, Aug 26, 2008 at 9:24 PM, W. eWatson <[EMAIL PROTECTED]> wrote: > John Machin wrote: > >> On Aug 27, 10:21 am, "W. eWatson" <[EMAIL PROTECTED]> wrote: >> >>> I'm using IDLE for Python 2.4, and put pfydate distribution in >>> C:\Python24\Lib\site-packages\pfydate, as required by the >>> page. >>> How to install pyfdate. >>> >>> Save pyfdate.py into your PythonNN/Lib/site-packages directory. >>> I copied it into C:\Python24\Lib\site-packages\pfydate >>> >> >> If that means that you ended up with >> C:\Python24\Lib\site-packages\pfydate\pyfdate.py >> then you have *not* followed the instructions "Save pyfdate.py into >> your PythonNN/Lib/site-packages directory". >> You need to end up with >> C:\Python24\Lib\site-packages\pyfdate.py >> > None of the folders in C:\Python24\Lib\site-packages\ have py as a suffix > (as seen either by the IDLE path browser or XP). My folder is exactly > C:\Python24\Lib\site-packages\pfydate in XP and it contains about 12 py > files. > There are exactly three folders under > C:\Python24\Lib\site-packages\ according to the IDLE path browser. This > does not agree with XP, which has: > Numeric > pfydate > scipy > numpy > PIL > >> You're not supposed to use the entire folder, just the pyfdate.py file inside the folder. -- http://mail.python.org/mailman/listinfo/python-list
Re: Date Comparison and Manipulation Functions?
John Machin wrote: On Aug 27, 10:21 am, "W. eWatson" <[EMAIL PROTECTED]> wrote: I'm using IDLE for Python 2.4, and put pfydate distribution in C:\Python24\Lib\site-packages\pfydate, as required by the page. How to install pyfdate. Save pyfdate.py into your PythonNN/Lib/site-packages directory. I copied it into C:\Python24\Lib\site-packages\pfydate If that means that you ended up with C:\Python24\Lib\site-packages\pfydate\pyfdate.py then you have *not* followed the instructions "Save pyfdate.py into your PythonNN/Lib/site-packages directory". You need to end up with C:\Python24\Lib\site-packages\pyfdate.py None of the folders in C:\Python24\Lib\site-packages\ have py as a suffix (as seen either by the IDLE path browser or XP). My folder is exactly C:\Python24\Lib\site-packages\pfydate in XP and it contains about 12 py files. There are exactly three folders under C:\Python24\Lib\site-packages\ according to the IDLE path browser. This does not agree with XP, which has: Numeric pfydate scipy numpy PIL If in doubt, get to a command prompt and type dir C:\Python24\Lib\site-packages\pfydate* and tell us what you see. Execution in IDLE produced: - Traceback (most recent call last): File "C:\Sandia_Meteors\Improved_Sentinel\Sentinel_Playground\date_example.py", line 1, in ? from pyfdate import * ImportError: No module named pyfdate - Looking in the Path Browser, I don't see pyfdate. I see PIL package and scipy package. -- 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 Web Page: -- http://mail.python.org/mailman/listinfo/python-list
Re: Date Comparison and Manipulation Functions?
On Aug 27, 10:21 am, "W. eWatson" <[EMAIL PROTECTED]> wrote: > > I'm using IDLE for Python 2.4, and put pfydate distribution in > C:\Python24\Lib\site-packages\pfydate, as required by the > page. > How to install pyfdate. > > Save pyfdate.py into your PythonNN/Lib/site-packages directory. > I copied it into C:\Python24\Lib\site-packages\pfydate If that means that you ended up with C:\Python24\Lib\site-packages\pfydate\pyfdate.py then you have *not* followed the instructions "Save pyfdate.py into your PythonNN/Lib/site-packages directory". You need to end up with C:\Python24\Lib\site-packages\pyfdate.py If in doubt, get to a command prompt and type dir C:\Python24\Lib\site-packages\pfydate* and tell us what you see. > > Execution in IDLE produced: > - > Traceback (most recent call last): >File > "C:\Sandia_Meteors\Improved_Sentinel\Sentinel_Playground\date_example.py", > line 1, in ? > from pyfdate import * > ImportError: No module named pyfdate > - > Looking in the Path Browser, I don't see pyfdate. I see PIL package and > scipy package. -- http://mail.python.org/mailman/listinfo/python-list
Re: Date Comparison and Manipulation Functions?
[EMAIL PROTECTED] wrote: check out Pyfdate: http://www.ferg.org/pyfdate from pyfdate import * t = Time().add(hours=14) print "It is now", t.wdt datestring1 = "2005/10/05" #year,month,day datestring2 = "2002/09/22" #year,month,day datestring3 = "2007/11/11" #year,month,day year,month,day = numsplit(datestring1) # split into integers t1 = Time(year,month,day) for datestring in (datestring2,datestring1,datestring3): year,month,day = numsplit(datestring) t2 = Time(year,month,day) if t1 > t2: print t1.isodate, "is later than ", t2.isodate elif t1 == t2: print t1.isodate, "is the same as ", t2.isodate elif t1 < t2: print t1.isodate, "is earlier than", t2.isodate print t1 = Time(2000,2,28) print "The date after", t1.d, "is", t1.plus(day=1).d t1 = Time(2001,2,28) print "The date after", t1.d, "is", t1.plus(day=1).d t1 = Time(2004,2,28) print "The date after", t1.d, "is", t1.plus(day=1).d print datestring1 = "2005/10/05 20:10:08" datestring2 = "2005/10/05 20:10:06" datestring3 = "2005/10/05 20:10:09" t1 = Time(*numsplit(datestring1)) for datestring in (datestring2,datestring1,datestring3): t2 = Time(*numsplit(datestring)) if t1 > t2: print t1.d, t1.civiltime2, "is later than ", t2.d, t2.civiltime2 elif t1 == t2: print t1.d, t1.civiltime2, "is the same as ", t2.d, t2.civiltime2 elif t1 < t2: print t1.d, t1.civiltime2, "is earlier than", t2.d, t2.civiltime2 I'm using IDLE for Python 2.4, and put pfydate distribution in C:\Python24\Lib\site-packages\pfydate, as required by the page. How to install pyfdate. Save pyfdate.py into your PythonNN/Lib/site-packages directory. I copied it into C:\Python24\Lib\site-packages\pfydate Execution in IDLE produced: - Traceback (most recent call last): File "C:\Sandia_Meteors\Improved_Sentinel\Sentinel_Playground\date_example.py", line 1, in ? from pyfdate import * ImportError: No module named pyfdate - Looking in the Path Browser, I don't see pyfdate. I see PIL package and scipy package. Comments? -- 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 Web Page: -- http://mail.python.org/mailman/listinfo/python-list
Re: Date Comparison and Manipulation Functions?
[EMAIL PROTECTED] wrote: check out Pyfdate: http://www.ferg.org/pyfdate from pyfdate import * t = Time().add(hours=14) print "It is now", t.wdt datestring1 = "2005/10/05" #year,month,day datestring2 = "2002/09/22" #year,month,day datestring3 = "2007/11/11" #year,month,day year,month,day = numsplit(datestring1) # split into integers t1 = Time(year,month,day) for datestring in (datestring2,datestring1,datestring3): year,month,day = numsplit(datestring) t2 = Time(year,month,day) if t1 > t2: print t1.isodate, "is later than ", t2.isodate elif t1 == t2: print t1.isodate, "is the same as ", t2.isodate elif t1 < t2: print t1.isodate, "is earlier than", t2.isodate print t1 = Time(2000,2,28) print "The date after", t1.d, "is", t1.plus(day=1).d t1 = Time(2001,2,28) print "The date after", t1.d, "is", t1.plus(day=1).d t1 = Time(2004,2,28) print "The date after", t1.d, "is", t1.plus(day=1).d print datestring1 = "2005/10/05 20:10:08" datestring2 = "2005/10/05 20:10:06" datestring3 = "2005/10/05 20:10:09" t1 = Time(*numsplit(datestring1)) for datestring in (datestring2,datestring1,datestring3): t2 = Time(*numsplit(datestring)) if t1 > t2: print t1.d, t1.civiltime2, "is later than ", t2.d, t2.civiltime2 elif t1 == t2: print t1.d, t1.civiltime2, "is the same as ", t2.d, t2.civiltime2 elif t1 < t2: print t1.d, t1.civiltime2, "is earlier than", t2.d, t2.civiltime2 It looks good. Thanks. -- 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 Web Page: -- http://mail.python.org/mailman/listinfo/python-list
Re: Date Comparison and Manipulation Functions?
check out Pyfdate: http://www.ferg.org/pyfdate from pyfdate import * t = Time().add(hours=14) print "It is now", t.wdt datestring1 = "2005/10/05" #year,month,day datestring2 = "2002/09/22" #year,month,day datestring3 = "2007/11/11" #year,month,day year,month,day = numsplit(datestring1) # split into integers t1 = Time(year,month,day) for datestring in (datestring2,datestring1,datestring3): year,month,day = numsplit(datestring) t2 = Time(year,month,day) if t1 > t2: print t1.isodate, "is later than ", t2.isodate elif t1 == t2: print t1.isodate, "is the same as ", t2.isodate elif t1 < t2: print t1.isodate, "is earlier than", t2.isodate print t1 = Time(2000,2,28) print "The date after", t1.d, "is", t1.plus(day=1).d t1 = Time(2001,2,28) print "The date after", t1.d, "is", t1.plus(day=1).d t1 = Time(2004,2,28) print "The date after", t1.d, "is", t1.plus(day=1).d print datestring1 = "2005/10/05 20:10:08" datestring2 = "2005/10/05 20:10:06" datestring3 = "2005/10/05 20:10:09" t1 = Time(*numsplit(datestring1)) for datestring in (datestring2,datestring1,datestring3): t2 = Time(*numsplit(datestring)) if t1 > t2: print t1.d, t1.civiltime2, "is later than ", t2.d, t2.civiltime2 elif t1 == t2: print t1.d, t1.civiltime2, "is the same as ", t2.d, t2.civiltime2 elif t1 < t2: print t1.d, t1.civiltime2, "is earlier than", t2.d, t2.civiltime2 -- http://mail.python.org/mailman/listinfo/python-list
Re: Date Comparison and Manipulation Functions?
"W. eWatson" <[EMAIL PROTECTED]> writes: > Are there some date and time comparison functions that would compare, say, > > Is 10/05/05 later than 09/22/02? (or 02/09/22 format, yy/mm/dd) > Is 02/11/07 the same as 02/11/07? > > Is 14:05:18 after 22:02:51? (24 hour day is fine) > > How about the date after 02/28/04 is 02/29/04, or the date after > 09/30/08 is 10/01/08? > > How about is 03/03/04 20:10:08 after 03/07/03 14:00:00? Probably the > others above will suffice. http://docs.python.org/lib/module-datetime.html -- http://mail.python.org/mailman/listinfo/python-list
Date Comparison and Manipulation Functions?
Are there some date and time comparison functions that would compare, say, Is 10/05/05 later than 09/22/02? (or 02/09/22 format, yy/mm/dd) Is 02/11/07 the same as 02/11/07? Is 14:05:18 after 22:02:51? (24 hour day is fine) How about the date after 02/28/04 is 02/29/04, or the date after 09/30/08 is 10/01/08? How about is 03/03/04 20:10:08 after 03/07/03 14:00:00? Probably the others above will suffice. -- 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 Web Page: -- http://mail.python.org/mailman/listinfo/python-list
