Passing info to function used in re.sub

[Thomas Passin]

On 9/3/2023 12:10 PM, Jan Erik Moström via Python-list wrote:
> I'm looking for some advice for how to write this in a clean way
> 
> I want to replace some text using a regex-pattern, but before creating replacement text I need to some file checking/copying etc. My code right now look something like this:
> 
> def fix_stuff(m):
> 	# Do various things that involves for info
> 	# that what's available in m
> 	replacement_text = m.group(1) + global_var1 + global_var2
> 	return replacement_text
> 
> and the call comes here
> 
> global_var1 = "bla bla"
> global_var2 = "pff"
> 
> new_text = re.sub(im_pattern,fix_stuff,md_text)
> 
> 
> The "problem" is that I've currently written some code that works but it uses global variables ... and I don't like global variables. I assume there is a better way to write this, but how?
> 
> = jem

There are two things to keep in mind here, I think.  First, in Python a 
"global" variable is really module-level, so variables specific to one 
module seem fine and are common practice.

Second, the way you have written this example, it looks like these 
module-level "variables" are in effect constants.  In other words, they 
are just shorthand for specific declared quantities.  If this is so, 
then it makes even more sense to define them as module-level objects in 
the module that needs to use them.

If you still don't want to use them as "global" in your module, then 
define them in a separate module and import them from that module.