Re: frozendict: an experiment

2020-07-18 Thread Inada Naoki
On Sat, Jul 18, 2020 at 7:05 AM Marco Sulla wrote: > > > > > But when frozendicts are merged? > > I think there is a very little chance. > > frozendicts could be used for kwargs: > > f(a=1, b=2) > # some code > f(a=1, b=2) > > For what I know, CPython uses PyDictObject for kwargs. Since dicts are

Re: Python pandas Excel

2020-07-18 Thread Peter Otten
J Conrado wrote: > > > > > > > > > > > > HI, > > > I have an excel file with several columns, the first day/month,/year and > hour: > > > Data > 01/11/2017 00:00 > 01/11/2017 03:00 > 01/11/2017 06:00 > 01/11/2017 09:00 > 01/11/2017 12:00 > 01/11/2017 15:00 > 01/11/2017 18:00 > 01/11

Re: A Python installation help doc much more friendly to newcomers? [Was Re: help]

2020-07-18 Thread Oscar Benjamin
On Sat, 18 Jul 2020 at 05:39, dn via Python-list wrote: > > On 18/07/20 3:29 PM, boB Stepp wrote: > > On Fri, Jul 17, 2020 at 9:48 PM dn via Python-list > > wrote: > >> > >> On 18/07/20 1:53 PM, Castillo, Herbert S wrote: > >>> I downloaded python not to long ago, and today when I opened Python o

Re: Fake news Detect

2020-07-18 Thread Vincent Davis
Data Sceptic has a couple podcast and some of the code is open source. https://dataskeptic.com/blog/episodes/2018/algorithmic-detection-of-fake-news Thanks Vincent Davis 720-301-3003 *Want to get a hold of me?* *SMS: awesome.phone: ok...* *email: bad!* On Fri, Jul 17, 2020 at 11:39 PM Mike Dew

RE: help

2020-07-18 Thread Castillo, Herbert S
Thank you, boB! Yes, I kept on opening the installer. Your directions were great from memory, and I will look into the Python tutor mailing list. Thanks again. Herbert -Original Message- From: boB Stepp Sent: Friday, July 17, 2020 7:43 PM To: Castillo, Herbert S Cc: python-list@pytho

Iterating over dict is slower than iterating over iter(dict)?

2020-07-18 Thread Marco Sulla
$ ./python -VV Python 3.10.0a0 (heads/master:64053c31a4, Jul 18 2020, 20:14:48) [GCC 10.1.1 20200718] dict_bench.py: import timeit from string import Template def autorange(stmt, setup="pass", repeat=5): if setup == None: setup = "pass" t = timeit.Timer(stmt=stmt

Re: Iterating over dict is slower than iterating over iter(dict)?

2020-07-18 Thread Chris Angelico
On Sun, Jul 19, 2020 at 7:20 AM Marco Sulla wrote: > > I noticed that iterating over a dictionary seems quite slower than creating > an iterator and iterating over it. Maybe I miss something? Welcome to microbenchmarks, where the tiniest change suddenly makes the entire benchmark meaningless :)

Re: frozendict: an experiment

2020-07-18 Thread Marco Sulla
On Sat, 18 Jul 2020 at 10:02, Inada Naoki wrote: > On Sat, Jul 18, 2020 at 7:05 AM Marco Sulla > wrote: > > For what I know, CPython uses PyDictObject for kwargs. Since dicts are > > mutable, it's a problem to cache them properly. > > On caller side, Python doesn't use dict at all. > On callee s

Re: Iterating over dict is slower than iterating over iter(dict)?

2020-07-18 Thread Marco Sulla
... oh my ... Sure, thank you. Thinking positive, I wasted a lot of hours, but I discovered timeit.Timer.autorange On Sat, 18 Jul 2020 at 23:30, Chris Angelico wrote: > On Sun, Jul 19, 2020 at 7:20 AM Marco Sulla > wrote: > > > > I noticed that iterating over a dictionary seems quite slower th

Re: Iterating over dict is slower than iterating over iter(dict)?

2020-07-18 Thread Chris Angelico
On Sun, Jul 19, 2020 at 8:56 AM Marco Sulla wrote: > > ... oh my ... Sure, thank you. > Thinking positive, I wasted a lot of hours, but I discovered > timeit.Timer.autorange > Nah... You *spent* a lot of hours, almost certainly enjoyably, and along the way, you learned things! That's not wasted

Re: A Python installation help doc much more friendly to newcomers? [Was Re: help]

2020-07-18 Thread dn via Python-list
On 18/07/20 11:48 PM, Oscar Benjamin wrote: On Sat, 18 Jul 2020 at 05:39, dn via Python-list wrote: On 18/07/20 3:29 PM, boB Stepp wrote: On Fri, Jul 17, 2020 at 9:48 PM dn via Python-list wrote: On 18/07/20 1:53 PM, Castillo, Herbert S wrote: I downloaded python not to long ago, and toda

Re: frozendict: an experiment

2020-07-18 Thread Inada Naoki
On Sun, Jul 19, 2020 at 6:38 AM Marco Sulla wrote: > > On Sat, 18 Jul 2020 at 10:02, Inada Naoki wrote: >> >> On Sat, Jul 18, 2020 at 7:05 AM Marco Sulla >> wrote: >> > For what I know, CPython uses PyDictObject for kwargs. Since dicts are >> > mutable, it's a problem to cache them properly. >>