🌐 Mailman 3 June 2024 - Python-list - python.org

Re: Couldn't install numpy on Python 2.7
by Chris Green June 13, 2024

June 13, 2024

Chris Angelico <rosuav(a)gmail.com> wrote: > On Thu, 13 Jun 2024 at 10:58, <avi.e.gross(a)gmail.com> wrote: > > > > Chris, > > > > You seem to have perceived an insult that I remain unaware of. > > If you're not aware that you're saying this, then don't say it. > Er, um, that really makes no sense! :-) How can one not say something that one isn't aware of saying? -- Chris Green ·

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Re: Couldn't install numpy on Python 2.7
by Gordinator June 13, 2024

June 13, 2024

On 12/06/2024 12:30, marc nicole wrote: > I am trying to install numpy library on Python 2.7.15 in PyCharm but the > error message I get is: > > ERROR: Could not find a version that satisfies the requirement numpy (from >> versions: none) >> ERROR: No matching distribution found for numpy >> c:\python27\lib\site-packages\pip\_vendor\urllib3\util\ssl_.py:164: >> InsecurePlatformWarning: A true SSLContext object is not available. This >> prevents urllib3 fro >> m configuring SSL appropriately and may cause certain SSL connections to >> fail. You can upgrade to a newer version of Python to solve this. For more >> information, see >> https://urllib3.readthedocs.io/en/latest/advanced-usage.html#ssl-warnings >> InsecurePlatformWarning, > > > Any clues? Why are you using Python 2? Come on, it's been 16 years. Ya gotta move on at some point.

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Re: Couldn't install numpy on Python 2.7
by Greg Ewing June 12, 2024

June 12, 2024

On 13/06/24 4:31 am, avi.e.gross(a)gmail.com wrote: > It seems Microsoft is having a problem where something lik 2/3 of Windows > users have not upgraded from Windows 10 after many years At least Python 3 is a clear improvement over Python 2 in many ways. Whereas the only thing Microsoft seems to have done with Windows in recent times is change it in ways that nobody wants, so there is understandable resistance to upgrading even if it's possible. On 13/06/24 10:09 am, Chris Angelico wrote: > So if anyone > actually does need to use pip with Python 2.7, they probably need to > set up a local server You should also be able to download a .tar.gz from PyPI and use pip to install that. Although you'll have to track down the dependencies yourself in that case. -- Greg

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Re: in Python? -- Chunk -- (ChunkC '(a a b b b)), ==> ((a 2) (b 3))
by HenHanna June 11, 2024

June 11, 2024

On 6/10/2024 6:29 AM, Rob Cliffe wrote: > import itertools > > def chunk1(seq): > return [ ch * len(list(grp)) for (ch, grp) in itertools.groupby(s) ] > > def chunk2(seq): > return [ (ch, len(list(grp))) for (ch, grp) in itertools.groupby(s) ] > > s='aaabbccccaa' > print(chunk1(s)) > print(chunk2(s)) > ################################### > Program output: > ['aaa', 'bb', 'cccc', 'aa'] > [('a', 3), ('b', 2), ('c', 4), ('a', 2)] > > Rob Cliffe > thank you... OMG... For 10 minutes... i was SO mystified by the question... How can this code work??? , when it's > def chunk1(seq): and it's [s] within the def-body ? it seemed as if the Compiler was doing a DWIM (Do what i mean) trick. > On 09/06/2024 22:20, HenHanna via Python-list wrote: >> >> Chunk, ChunkC -- nice simple way(s) to write these in Python? >> >> >> (Chunk '(a a b a a a b b)) >> ==> ((a a) (b) (a a a) (b b)) >> >> >> (Chunk '(a a a a b c c a a d e e e e)) >> ==> ((a a a a) (b) (c c) (a a) (d) (e e e e)) >> >> >> (Chunk '(2 2 foo bar bar j j j k baz baz)) >> ==> ((2 2) (foo) (bar bar) (j j j) (k) (baz baz)) >> >> _________________ >> >> (ChunkC '(a a b b b)) >> ==> ((a 2) (b 3)) >> >> (ChunkC '(a a b a a a b b)) >> ==> ((a 2) (b 1) (a 3) (b 2)) >

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in Python? -- Chunk -- (ChunkC '(a a b b b)), ==> ((a 2) (b 3))
by HenHanna June 11, 2024

June 11, 2024

Chunk, ChunkC -- nice simple way(s) to write these in Python? (Chunk '(a a b a a a b b)) ==> ((a a) (b) (a a a) (b b)) (Chunk '(a a a a b c c a a d e e e e)) ==> ((a a a a) (b) (c c) (a a) (d) (e e e e)) (Chunk '(2 2 foo bar bar j j j k baz baz)) ==> ((2 2) (foo) (bar bar) (j j j) (k) (baz baz)) _________________ (ChunkC '(a a b b b)) ==> ((a 2) (b 3)) (ChunkC '(a a b a a a b b)) ==> ((a 2) (b 1) (a 3) (b 2))

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Re: in Python? -- Chunk -- (ChunkC '(a a b b b)), ==> ((a 2) (b 3))
by HenHanna June 10, 2024

June 10, 2024

On 6/9/2024 7:05 PM, avi.e.gross(a)gmail.com wrote: > I remembered that HenHanna had been hard to deal with in the past and when > my reply to him/her/them bounced as a bad/fake address it came back to me > that I am better off not participating in this latest attempt to get us to > perform then probably shoot whatever we say down. > > A considerate person would ask questions more clearly and perhaps explain > what language they are showing us code from and so on. > > Life is too short to waste. > > -----Original Message----- > From: Python-list <python-list-bounces+avi.e.gross=gmail.com(a)python.org> On > Behalf Of HenHanna via Python-list > Sent: Sunday, June 9, 2024 5:20 PM > To: python-list(a)python.org > Subject: in Python? -- Chunk -- (ChunkC '(a a b b b)), ==> ((a 2) (b 3)) > > Chunk, ChunkC -- nice simple way(s) to write these in Python? > > > (Chunk '(a a b a a a b b)) > ==> ((a a) (b) (a a a) (b b)) > > > (Chunk '(a a a a b c c a a d e e e e)) > ==> ((a a a a) (b) (c c) (a a) (d) (e e e e)) > > > (Chunk '(2 2 foo bar bar j j j k baz baz)) > ==> ((2 2) (foo) (bar bar) (j j j) (k) (baz baz)) > > _________________ > > (ChunkC '(a a b b b)) > ==> ((a 2) (b 3)) > > (ChunkC '(a a b a a a b b)) > ==> ((a 2) (b 1) (a 3) (b 2)) i was just curiuos about simple, clever way to write it in Python in Scheme (Gauche) (use srfi-1) ;; span (define (gp x) (if (null? x) '() (let-values (((F L) (span (cut equal? (car x) <>) x))) (cons F (gp L))))) (print (gp '(a b b a a a b b b b))) (print (gp '(c c c a d d d d a e e e e e))) (define (gpC x) (map (lambda (x) (list (car x) (length x))) (gp x))) (print (gpC '(a b b a a a b b b b))) (print (gpC '(c c c a d d d d a e e e e e)))

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Re: IDLE: clearing the screen
by Michael F. Stemper June 10, 2024

June 10, 2024

On 10/06/2024 09.32, Stefan Ram wrote: > "Michael F. Stemper" <michael.stemper(a)gmail.com> wrote or quoted: >> On 08/06/2024 14.18, Rob Cliffe wrote: >>> OK, here is the advanced version: >>> import os >>> class _cls(object): >>> def __repr__(self): >>> os.system('cls') >>> return '' >>> cls = _cls() > ... >> Why have it return anything at all? > > Because __repr__ needs to return a str. Got it. Thanks for clarifying. -- Michael F. Stemper 87.3% of all statistics are made up by the person giving them.

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Re: IDLE: clearing the screen
by Michael F. Stemper June 10, 2024

June 10, 2024

On 08/06/2024 14.18, Rob Cliffe wrote: > OK, here is the advanced version: > import os > class _cls(object): > def __repr__(self): > os.system('cls') > return '' > cls = _cls() > > Now when you type > cls > it clears the screen. The only flaw is that there is a blank line at the very top of the screen, and the ">>>" prompt appears on the SECOND line. > (This blank line is because the IDLE prints the blank value returned by "return ''" and adds a newline to it, as it does when printing the value of any expression.) Why have it return anything at all? -- Michael F. Stemper Indians scattered on dawn's highway bleeding; Ghosts crowd the young child's fragile eggshell mind.

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Re: in Python? -- Chunk -- (ChunkC '(a a b b b)), ==> ((a 2) (b 3))
by HenHanna June 9, 2024

June 9, 2024

On 6/9/2024 3:50 PM, MRAB wrote: > On 2024-06-09 22:20, HenHanna via Python-list wrote: >> >> Chunk, ChunkC -- nice simple way(s) to write these in Python? >> >> >> (Chunk '(a a b a a a b b)) >> ==> ((a a) (b) (a a a) (b b)) >> >> >> (Chunk '(a a a a b c c a a d e e e e)) >> ==> ((a a a a) (b) (c c) (a a) (d) (e e e e)) >> >> >> (Chunk '(2 2 foo bar bar j j j k baz baz)) >> ==> ((2 2) (foo) (bar bar) (j j j) (k) (baz baz)) >> >> _________________ >> >> (ChunkC '(a a b b b)) >> ==> ((a 2) (b 3)) >> >> (ChunkC '(a a b a a a b b)) >> ==> ((a 2) (b 1) (a 3) (b 2)) > > You can make use of itertools.groupby. > Thanks! i'll try it. Scheme (Gauche) (use srfi-1) ; span (define (gp x) (if (null? x) '() (let-values (((F L) (span (cut equal? (car x) <>) x))) (cons F (gp L))))) (print (gp '(a b b a a a b b b b))) (print (gp '(c c c a d d d d a e e e e e)))

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Re: IDLE: clearing the screen
by Rob Cliffe June 9, 2024

June 9, 2024

OK, here is the advanced version: import os class _cls(object): def __repr__(self): os.system('cls') return '' cls = _cls() Now when you type cls it clears the screen. The only flaw is that there is a blank line at the very top of the screen, and the ">>>" prompt appears on the SECOND line. (This blank line is because the IDLE prints the blank value returned by "return ''" and adds a newline to it, as it does when printing the value of any expression.) Best wishes Rob Cliffe

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