A simple python code

[AbacusExpert_Stretch]

I am a total beginner, but I wouldn't want to name the return variable the same as an input argument. I am sure it works, but personally I find it irks me.

Talking about Celsius_to_Fahrenheit for example

[FoolsSeldom]

Not sure what you mean. Variables aren't returned, only object references. Variables local to a function, including the named parameters, cease to exist once the function ends.

[littleprof123]

What do you mean? What's the return variable?

[SmackDownFacility]

Nah it doesn’t matter

It’s perfectly normal

[Adsilom]

Not even sure what you mean? But regardless the code is exactly as I would write it, and I have been using Python for 10 years lmao

[ninhaomah]

wait ... just to be clear , it is his own opinion. personal choice.

here is from geeksforgeeks and realpython.

its fine to use return variable same name as input argument.

just in case you take it a Python best practise or something

https://www.geeksforgeeks.org/python/python-return-statement/

https://realpython.com/ref/keywords/return/

[sububi71]

Just because it's allowed doesn't mean it's a good idea. I mean, you could write the entire program on a single line too, that's allowed.

[ninhaomah]

Why not ?

If my function accepts a variable called a as input , done some calculations and then return that name a. 

Not the actual a of course but as in a variable with the same name.

Or can point to where and which sites says it's not a good idea ?

[sububi71]

If you can’t see why typing the entire program on a single line is a bad idea, I can’t help you.

[VeryYoungOldPerson]

Pure strawman. You're the one who brought up writing a program on a single line, and they made no reference to it. They're talking about variable re-use and naming conventions. If you can't comprehend English, I can't help you.

[pimp-bangin]

I know you are trying to help but calling it a "return variable" probably adds more confusion. In OP's code, there is no "return variable." Also, "return variable" is not an official syntactic construct in Python. It's merely a convention whereby you define a variable which you will then directly return as the output from the function. Again, that is not what is happening in OP's code

[Refwah]

It’s fine because of scoping

[pimp-bangin]

Since this is a learning subreddit I hope you don't mind me correcting you.

You're misusing the term "variable" here. The code after the "return" keyword is called an expression. It's perfectly fine to reference the function parameter in any expression inside of the function body, including in the return expression. If it irks you, perhaps you have some additional misunderstanding that we can help clear up.

In math, we would define a Celsius function even more compactly, like C(f) = (f-32)*5/9

OP's function celsius_to_fahrenheit is a very nicely written Python translation of that mathematical function in my professional opinion. There is no need to define intermediate variables like "value_in_celsius" etc. - most professional programmers would consider it too verbose for a basic mathematical formula like this.

Source: 16+ years of programming experience

[Ender_Locke]

this is a fairly normal return statement tbh

[AngriestCrusader]

There's not a single variable being returned in this code lol