Re: Re: Preferred style

This:
https://wiki.wxpython.org/wxPython%20Style%20Guide

is very old, but still helpful.

It would be really great if someone wants to update it for modern wx and
modern style.

-CHB


On Thu, Apr 22, 2021 at 11:39 PM Steve Barnes <[email protected]>
wrote:

> Hi Phil,
>
> Glad if I helped. A couple of final points that may help.
>
> The use of -1 by  wx & wxPython in some places as a parameter - the most
> common place to see this is for the Windows ID - each window needs a unique
> ID and in the Windows world that ID is an Unisigned Long type so Zero is a
> valid ID (definitely not one that you want to use). Duplicating IDs causes
> all sort of problems. You can manually set your windows IDs to values in
> the User range and try to keep track of them yourself but that often
> results in clashes accordingly wx & wxpython use an absolute value of -1 to
> say "Please assign the next unused number in the permitted range" to wx -
> this can also be spelt wx.ID_ANY which is preferable from a maintenance
> point of view but is 9 keys rather than 2 - hence a lot of examples use -1.
> If you look at the signature of wx.Frame you will see Frame(parent,
> id=ID_ANY, title=EmptyString, pos=DefaultPosition, size=DefaultSize,
> style=DEFAULT_FRAME_STYLE, name=FrameNameStr) but if you have imported wx
> and just type wx.ID_ANY you will see an output of -1.
>
> The use of super - this is used to access and call parent class methods
> usually those with the same name as a  method that your class defines -
> most commonly the __init__ method but it can be used for any method  -
> python 3  simplified the syntax for super, but still allows the older
> syntax so you will often see super(parent_class, self).__init__(....) in
> older or backwards compatible code rather than the newer
> super().__init__(...).
>
> One of the joys of both Python and wx is the degree of backwards
> compatibility that the developers have managed to maintain but sometimes it
> does lead to outdated code examples, online and in books, that can cause
> confusion. Note that whenever I have found old code that is "broken" by an
> update and fix the issue usually it turns out to be that I was getting away
> with doing something that I shouldn't have been and the fixed code still
> works with the older versions of python & wx (but possibly not the very old
> versions).
>
> All the best for your wxpython journey.
>
> Steve
>
> -----Original Message-----
> From: [email protected] <[email protected]>
> On Behalf Of Phil
> Sent: 23 April 2021 02:04
> To: [email protected]
> Subject: Re: [wxPython-users] Re: Preferred style
>
> On 22/4/21 3:44 pm, Steve Barnes wrote:
> >
> > Hi,
> >
> > I would encourage you to use pylint
> > <https://emea01.safelinks.protection.outlook.com/?url=https%3A%2F%2Fww
> > w.pylint.org%2F&amp;data=04%7C01%7C%7C46ecf246d9bb4a69aa0708d905f3bcb0
> >
> %7C84df9e7fe9f640afb435aaaaaaaaaaaa%7C1%7C0%7C637547366658419079%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C1000&amp;sdata=uzb6A8LVwEcrEU4JT692sfx%2BCVST0YsCdG4gQhxCMVU%3D&amp;reserved=0>
> and possibly black <
> https://emea01.safelinks.protection.outlook.com/?url=https%3A%2F%2Fblack.readthedocs.io%2Fen%2Fstable%2F&amp;data=04%7C01%7C%7C46ecf246d9bb4a69aa0708d905f3bcb0%7C84df9e7fe9f640afb435aaaaaaaaaaaa%7C1%7C0%7C637547366658419079%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C1000&amp;sdata=WqV2pJ6jX1PRg9taZvhXVW%2B%2Bd1SCNMA0tYKx4iiF9ZE%3D&amp;reserved=0>
> these will help to keep your style consistent and valid but there are a
> number of other tools.
>
> Thank you Steve and RF for your replies,
>
> My question didn't really relate to formatting but more to the use of
> "super", default arguments and the use of -1 as an argument in the
> constructor.  Your reply, Steve, has cleared up a couple of points that I
> found confusing. More reading is required.
>
> I have used several different linters, formatters and IDEs over the years.
> I recently installed VS Code and like it a lot. I'm now using Pylint and
> Yapf.
>
> --
>
> Regards,
> Phil
>
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