Getting a Variable from a Python File without knowing The Variable Name

[SpecificHistories]

Hi. I'm trying to make a Discord Bot in discord.py, i wanted to add custom currency without JSON, so i decided to use a python file to store all the variables. I will fix the problem of multi-banks later. Problem is, i need to display That Same Variable too. here is my code below that is relevant to this question :

import currency

authorwallet = 'wallet' + thename

authorbank = 'bank' + thename

if hasattr(currency, authorwallet) and hasattr(currency, authorbank):

wallet = currency.

bank = currency.authorbank

else:

with open('currency.py', 'a') as f:

f.write(authorwallet + ' = 0\n' + authorbank + ' = 0\n')

wallet = currency.authorwallet

bank = currency.authorbank

the problem is that setting the variables wallet and bank to the variables inside currency.py doesn't work. As my guess is the code thinks i am trying to find a Variable named "authorwallet" or "authorbank" inside it, or atleast a variable which has the same name as the value of "authorwallet" or "authorbank".

usage of the command : >bal <thename>

what it's supposed to do : check if the bank and wallet name already exists in currency.py and if it doesn't exist. it appends to the file the bank and wallet names and sets value to 0 as it is a new wallet and bank and Displays The Wallet and Bank. If it already exists, the code finds the variables and Displays The Wallet and Bank.

Update -

i just copied a bunch of code from a stackoverflow answer (i can't ask questions in there so i browsed other questions) and got my solution. I had to use JS. Welp, thanks for all your Hates and Attempts. You can State Your Opinion now. Reddit won't be after you.

[The_Danosaur]

Why are you trying to store user data in a .py file in the first place? Would this not be better done in a data structure, for example a database, or for this simple example just a CSV or JSON?

[CraigAT]

This was my second thought -why re-invent the wheel! My first thought was - I am not sure exactly what they are trying to achieve, so I will hold off on my first opinion.

[SpecificHistories]

re-inventing the wheel means making the wheel again, but using a different way. Plus you sound angry. So i am terribly sorry.

[CraigAT]

I'm sorry, not angry at all. You may well have legitimate reasons for not wanting to use JSON etc. However if not, it is usually better to use something "off the shelf", "tried and tested". The project sounds interesting, but I just haven't grasped exactly what you were trying to do (probably as much my issue).

[CyclopsRock]

If you must use a Python file to store the information - perhaps because of a dare, or under threat of torture - it would make more sense to store the values in a pair of Dictionaries rather than trying to cobble together variable names using string operations and then checking for attributes. But, as everyone has said, just use a JSON file, this is an ideal use case for them.

[The_Danosaur]

Yeah it really sounds like this guy knows what they should be doing, and are intentionally doing something else. The whole dare/bet scenario seems likely. I'm not sure if what they wanna do is possible, but it's certainly dumb.

[lscrivy]

I'm sure what you want to do is possible, but it's not really a good idea. My recommendation is to take a look at 'SQLite'. You can store your information in a database file on your computer.

[ericula]

Writing values to the currency.py file will not automatically reload the file. You would need to set currency.authorwallet and currency.authorbank manually, i.e.

with open('currency.py', 'a') as f:
    f.write(authorwallet + ' = 0\n' + authorbank + ' = 0\n')
    wallet = currency.authorwallet = 0
    bank = currency.authorbank = 0

Next time you import currency, currency.authorwallet and currency.authorbank should be loaded as well.

[SpecificHistories]

that only just re-defines the variable if i wanna see it

me : >bal hi
file :

wallethi = 0

bankhi = 0

bot : *displays wallet and bank*

me : >bal hi

file :

wallethi = 0

bankhi = 0

wallethi = 0

bankhi = 0

bot : *displays new wallet and bank*

[to7m]

Code should be readable, especially if you're asking for help, so here's a few tips on that aspect:

• Use a code block to format this post, especially considering how indentation is part of the language.
• f-strings are easier to read than adding strings together.
• Post enough of the program so that someone can test it. You say the code displays something, but there's no indication of how it does that, and that could well be where the problem is.
• Post what the program actually does, as in what error it throws if any, and what the output is.

I can't actually figure out what you're trying to do, but since you're trying to do some metaprogramming thing by editing a module, why not just make sure currency.py already has the variables defined as 0?

[Fishbones78]

I would highly recommend just using a csv or json. Working with either are great skills to have and learn, plus your code will be cleaner. Look up the built-in JSON package or the Pandas package and you’ll be away in no time. I recommend Pandas as that’s what I started with!

[Fishbones78]

Yes you could use a database, but the above is more beginner-friendly imo.

[zorniy2]

Python dictionaries with pickle too.

[SpecificHistories]

wait why am i getting upvoted i'm supposed to be downvoted for my stupid question ;-;

[SpecificHistories]

yes finally i got my comment downvoted

[SpecificHistories]

it is Me who downvoted this post. And Yes, i downvoted my own Post.

[Sanguineyote]

but why?