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Groups > comp.lang.python > #94750
| From | Terry Reedy <tjreedy@udel.edu> |
|---|---|
| Subject | Re: How to Calculate NPV? |
| Date | 2015-07-29 15:08 -0400 |
| References | <249a5b7e-0364-4b74-94f4-c8bbfbba2479@googlegroups.com> <757d1a56-fc27-4996-acff-8bb7e07204d6@googlegroups.com> |
| Newsgroups | comp.lang.python |
| Message-ID | <mailman.1079.1438196929.3674.python-list@python.org> (permalink) |
On 7/29/2015 10:21 AM, ryguy7272 wrote: > On Wednesday, July 29, 2015 at 9:59:10 AM UTC-4, ryguy7272 wrote: >> I am using Spyder Python 2.7. I'm running this sample code. >> >> import scipy as sp >> cashflows=[50,40,20,10,50] >> npv=sp.npv(0.1,cashflows) >> round(npv,2) >> >> >> Now, I'm trying to get the NPV, and I don't see any obvious way to get it. >> The author of the book that I'm reading gets 144.56. I think that's wrong, but I don't know for sure, as Python won't do any calculation at all. It's easy to enter code and run it, but I can't tell how to get Python to actually DO the calculation. >> >> Any idea what I'm doing wrong? > > PERFECT!! SO SIMPLE!! > I don't know why the author didn't do that in the book. The book show you how to calculate things. It is up to you to display, output to a file, or use in further calculation. I do admit, though, that snippets that show how to use an existing function, rather than define a new function, might benefit from adding print(xxxx). -- Terry Jan Reedy
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How to Calculate NPV? ryguy7272 <ryanshuell@gmail.com> - 2015-07-29 06:58 -0700
Re: How to Calculate NPV? Saber Ayoub Chelaghma <saber.chelaghma@gmail.com> - 2015-07-29 07:09 -0700
Re: How to Calculate NPV? ryguy7272 <ryanshuell@gmail.com> - 2015-07-29 07:21 -0700
Re: How to Calculate NPV? ryguy7272 <ryanshuell@gmail.com> - 2015-07-29 07:27 -0700
Re: How to Calculate NPV? duncan smith <buzzard@invalid.invalid> - 2015-07-29 17:14 +0100
Re: How to Calculate NPV? Terry Reedy <tjreedy@udel.edu> - 2015-07-29 15:08 -0400
Re: How to Calculate NPV? Dave Farrance <df@see.replyto.invalid> - 2015-07-30 15:18 +0100
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