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Re: How/where to store calibration values - written by program A, read by program B

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From: greg.gre...@gmail.com (Greg Walters)
Newsgroups: comp.lang.python
Subject: Re: How/where to store calibration values - written by program A,
read by program B
Date: Thu, 28 Dec 2023 12:03:03 -0600
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by: Greg Walters - Thu, 28 Dec 2023 18:03 UTC

First, one of the posters got it right. Nothing is REALLY ever "written"
to the file. Consider it a global variable that isn't a global variable.

Assume you have two modules, A and B. Both modules import config.
Furthermore, let's assume that Module B 'writes' a variable called "font"...

shared.font="TkDefaultFont"

That information is immediately available to Module A. All Module A has to
do is (assuming that it has been initialized previously) do something like
this...

myFont=shared.font

Now, myFont has the value "TkDefaultFont" in both modules A and B.

Further, let's assume that we need to pass a ttk::Theme to Module B...
Module A does a
shared.currentTheme = "clam"

Anytime Module B wants to check the value of the shared variable, it can
do...

MyCurrentTheme = shared.currentTheme.

You can also use a similar variable that will hold a flag boolean "saying"
something like

shared.UpdatedInfo = True

This can be tested at any time via any timer check, including a Tkinter
root.after type timer. If the timer is true, simply go through your list
of shared variables (You should keep them in a list just to be sure) then
they can be checked on a timed basis. Or just use ...

MyVariable=shared.VariableName anytime you need to make sure it's updated.
If the value is the same, it only wastes a few clock cycles. However if it
has been updated, then you got the latest version.

This can work for any number of modules. You aren't limited to just two.

I hope this helps.

Greg
--
*My memory check bounced*

Greg Walters

Subject	Author
Re: How/where to store calibration values - written by program A,	Greg Walters

Sex is like air. It's only a big deal if you can't get any.

devel / comp.lang.python / Re: How/where to store calibration values - written by program A, read by program B