🌐 Mailman 3 September 2021 - Python-list - python.org

Re: Change the display style of the text on the STACKLINE.
by hongy...＠gmail.com Sept. 10, 2021

Sept. 10, 2021

On Thursday, September 9, 2021 at 8:57:37 PM UTC+8, Roland Mueller wrote: > Hello > > to 9. syysk. 2021 klo 6.53 hongy...(a)gmail.com (hongy...(a)gmail.com) > kirjoitti: > > I'm using the following code in my forked project [1]: > > > > percol.view.STACKLINE = 'Fold:F1,F2,F3 Push:C-p Pop:M-p Script:M-s Dir:M-d > > Dircmd:M-b' > > > > I would like to change the display style of the text mentioned above, for > > example, to underline some characters in it, as shown below: > > > > _D_ir:M-d > > > > > You can use e.g. str.replace() or re.sub() > > >>> percol.view.STACKLINE = percol.view.STACKLINE.replace('D', '_D_') > Result: 'Fold:F1,F2,F3 Push:C-p Pop:M-p Script:M-s _D_ir:M-d _D_ircmd:M-b' > > >>> import re > > Replace D with _D_ > >>> percol.view.STACKLINE = re.sub(r'([D])', > r'_\1_', percol.view.STACKLINE) > Result: 'Fold:F1,F2,F3 Push:C-p Pop:M-p Script:M-s _D_ir:M-d _D_ircmd:M-b' > > Replace D and M with _D_, _M_ > >>> percol.view.STACKLINE = re.sub(r'([DM])', r'_\1_', > percol.view.STACKLINE) > 'Fold:F1,F2,F3 Push:C-p Pop:_M_-p Script:_M_-s _D_ir:_M_-d _D_ircmd:_M_-b' > > Regards, > Roland I tried with the following, but failed to achieve the expected effect: class Term: HEADER = '\033[95m' OKBLUE = '\033[94m' OKGREEN = '\033[92m' WARNING = '\033[93m' FAIL = '\033[91m' ENDC = '\033[0m' LIGHTCYAN = '\033[1;36m' LIGHTGRAY = '\033[0;37m' YELLOW = '\033[0;33m' BOLD = '\033[1m' UNDERLINE = '\033[4m' [...] percol.view.STACKLINE = percol.view.STACKLINE.replace('D', Term.UNDERLINE + 'D' + Term.ENDC) The result will look like this: Fold:F1,F2,F3 Push:C-p Pop:M-p Script:M-s ?[4mD?[0mir:M-d ?[4mD?[0mircmd:M-b Regards, HY > > How to achieve this purpose? > > > > [1] > > https://github.com/hongyi-zhao/ariadne/blob/838179bb4275ac85f5342d9e7d086d6… > > > > Regards, > > HY > > -- > > https://mail.python.org/mailman/listinfo/python-list > >

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Re: Friday Finking: Contorted loops
by 2QdxY4RzWzUUiLuE＠potatochowder.com Sept. 10, 2021

Sept. 10, 2021

On 2021-09-09 at 22:33:16 +0000, Stefan Ram <ram(a)zedat.fu-berlin.de> wrote: > One can think of a language where every loop is exited this > way, the only loop construct would be > > loop > ... > > and it would /always/ have to be exited via enclosed breaks. I'm not quite sure what you mean by "one can," but that's how the simple form of Common Lisp's loop macro works. Friendlier looping constructs are built with other macros on top of that one and/or its underlying mechanism.¹ ¹ The underlying mechanism is the moral equivalent of a Python suite that can also contain tags and unconditional jumps to those tags, aka "goto"s.

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Change the display style of the text on the STACKLINE.
by hongy...＠gmail.com Sept. 9, 2021

Sept. 9, 2021

I'm using the following code in my forked project [1]: percol.view.STACKLINE = 'Fold:F1,F2,F3 Push:C-p Pop:M-p Script:M-s Dir:M-d Dircmd:M-b' I would like to change the display style of the text mentioned above, for example, to underline some characters in it, as shown below: _D_ir:M-d How to achieve this purpose? [1] https://github.com/hongyi-zhao/ariadne/blob/838179bb4275ac85f5342d9e7d086d6… Regards, HY

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Problems with running Python in Npp
by Ricardo Sept. 9, 2021

Sept. 9, 2021

Hey Python and crew I'm having difficulties installing and running Python on my computer. I've seen plenty YouTube videos on how to set it up, but none of them have worked. Any help or guidance will be greatly appreciated. Sincerely, Ricardo Sent from [1]Mail for Windows References Visible links 1. https://go.microsoft.com/fwlink/?LinkId=550986

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Re: combine multiple xlsx files which include dropdown columns in them.
by hongy...＠gmail.com Sept. 9, 2021

Sept. 9, 2021

On Thursday, September 9, 2021 at 9:15:23 AM UTC+8, Kushal Kumaran wrote: > On Tue, Sep 07 2021 at 10:05:58 PM, "hongy...(a)gmail.com" <hongy...(a)gmail.com> wrote: > > I've some xlsx files which include dropdown columns in them. I want to > > know whether I can combine all the lines into one xlsx file. Any hints > > for doing this job with python programmatically will be highly > > appreciated. > > > The dropdown is *probably* implemented using Excel's data validation > mechanism. openpyxl's documentation says it can read[1]/write Excel > files and also mentions data validation[2]. You might be able to use it > to read the existing files, combine the rows and write to a different > file. > > [1] https://openpyxl.readthedocs.io/en/stable/usage.html#read-an-existing-workb… > [2] https://openpyxl.readthedocs.io/en/stable/validation.html Thank you for your comments. For a related discussion on this topic, please refer to [1]. [1] https://groups.google.com/g/openpyxl-users/c/k2xnPZS2kbo/m/m2YmEO9ZBgAJ Regards, HY

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combine multiple xlsx files which include dropdown columns in them.
by hongy...＠gmail.com Sept. 9, 2021

Sept. 9, 2021

I've some xlsx files which include dropdown columns in them. I want to know whether I can combine all the lines into one xlsx file. Any hints for doing this job with python programmatically will be highly appreciated. Regards, HY

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Re: on writing a while loop for rolling two dice
by Grant Edwards Sept. 8, 2021

Sept. 8, 2021

On 2021-09-06, Stefan Ram <ram(a)zedat.fu-berlin.de> wrote: > "Avi Gross" <avigross(a)verizon.net> writes: >> In languages like C/C++ there are people who make up macros like: >>#define INDEFINITELY_LOOP while (true) >>Or something like that and then allow the preprocessor to replace >>INDEFINITELY_LOOP with valid C code. > > Those usually are beginners. > >>So, how to do something like that in python, is a challenge left to the >>user > > Such a use of macros is frowned upon by most C programmers, > because it renders the code unreadable. I remember engineering manager I worked with about 35 years ago who used a set of C macros to try to make his code look as much like BASIC as possible: #define IF if ( #define THEN ) { #define ELSE } else { #define ENDIF } ... IIRC he copied them out of a magazine article. He then proceeded to try to implement a tree search algorithm (he didn't actually know that's what he was doing) using his new "language" without using recursion (which he had never heard of and couldn't grok) by keeping track of state using an array. It did not go well and made him a bit of a laughingstock. IIRC, he had first tried to write it in actual BASIC, but gave up on that before switching to C and his ridiculous macro set.

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Re: on writing a while loop for rolling two dice
by charles hottel Sept. 8, 2021

Sept. 8, 2021

On 9/7/2021 9:20 PM, Avi Gross wrote: > Greg, > > Yes, a smart person may come up with such tricks but a really smart person, > in my view, adjusts. With some exceptions, such as when trying to port > existing code to a new language quickly, someone who is not too obsessive > will try to pick up the goals and spirit of a new language and use them when > it seems reasonable. And, a smart person, if they see nothing new, might > just go back to their old language or ... > > Pick a language that easily supports regular expressions and object creation > and functional programming and so on, like python, and ask why you might > want to use it to simulate a really old version of BASIC when you can just > use BASIC. > > Admittedly, most people are not flexible. I find that with human languages > too that some learn another language just enough to recognize words but not > to use the changed grammar or the different idioms and never become fluent. > > I am amused though at the fact that python, by using indentation rather than > things like curly braces, would make some of the games like shown below > quite a bit more difficult. > > -----Original Message----- > From: Python-list <python-list-bounces+avigross=verizon.net(a)python.org> On > Behalf Of Greg Ewing > Sent: Tuesday, September 7, 2021 9:08 PM > To: python-list(a)python.org > Subject: Re: on writing a while loop for rolling two dice > > On 8/09/21 2:53 am, Grant Edwards wrote: >> #define IF if ( >> #define THEN ) { >> #define ELSE } else { >> #define ENDIF } >> ... > > I gather that early versions of some of the Unix utilities were written by > someone who liked using macros to make C resemble Algol. > > I guess you can get away with that sort of thing if you're a Really Smart > Person. > > -- > Greg > -- > https://mail.python.org/mailman/listinfo/python-list > So what do yoy think or feel about a language like RATFOR (Rational FORTRAN) which was implemented as macros? Should they instead have simply adapted themselves to FORTRAN?

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on floating-point numbers
by Hope Rouselle Sept. 8, 2021

Sept. 8, 2021

Just sharing a case of floating-point numbers. Nothing needed to be solved or to be figured out. Just bringing up conversation. (*) An introduction to me I don't understand floating-point numbers from the inside out, but I do know how to work with base 2 and scientific notation. So the idea of expressing a number as mantissa * base^{power} is not foreign to me. (If that helps you to perhaps instruct me on what's going on here.) (*) A presentation of the behavior >>> import sys >>> sys.version '3.8.10 (tags/v3.8.10:3d8993a, May 3 2021, 11:48:03) [MSC v.1928 64 bit (AMD64)]' >>> ls = [7.23, 8.41, 6.15, 2.31, 7.73, 7.77] >>> sum(ls) 39.599999999999994 >>> ls = [8.41, 6.15, 2.31, 7.73, 7.77, 7.23] >>> sum(ls) 39.60000000000001 All I did was to take the first number, 7.23, and move it to the last position in the list. (So we have a violation of the commutativity of addition.) Let me try to reduce the example. It's not so easy. Although I could display the violation of commutativity by moving just a single number in the list, I also see that 7.23 commutes with every other number in the list. (*) My request I would like to just get some clarity. I guess I need to translate all these numbers into base 2 and perform the addition myself to see the situation coming up?

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Re: on writing a while loop for rolling two dice
by alister Sept. 8, 2021

Sept. 8, 2021

On Tue, 07 Sep 2021 14:53:29 +0000, Grant Edwards wrote: > On 2021-09-06, Stefan Ram <ram(a)zedat.fu-berlin.de> wrote: >> "Avi Gross" <avigross(a)verizon.net> writes: >>> In languages like C/C++ there are people who make up macros like: >>>#define INDEFINITELY_LOOP while (true) >>>Or something like that and then allow the preprocessor to replace >>>INDEFINITELY_LOOP with valid C code. >> >> Those usually are beginners. >> >>>So, how to do something like that in python, is a challenge left to the >>>user >> >> Such a use of macros is frowned upon by most C programmers, >> because it renders the code unreadable. > > I remember engineering manager I worked with about 35 years ago who used > a set of C macros to try to make his code look as much like BASIC as > possible: > > #define IF if ( #define THEN ) { #define ELSE } else { > #define ENDIF } > ... > > IIRC he copied them out of a magazine article. > > He then proceeded to try to implement a tree search algorithm (he didn't > actually know that's what he was doing) using his new "language" without > using recursion (which he had never heard of and couldn't grok) by > keeping track of state using an array. It did not go well and made him a > bit of a laughingstock. IIRC, he had first tried to write it in actual > BASIC, but gave up on that before switching to C and his ridiculous > macro set. 1 Simple rule, if you are programming in language 'a' then write Language 'a' Code it. Just because you can do something doesn't mean you should -- Help! I'm trapped in a Chinese computer factory!

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