What are place holder variables and how do they work? Is it the same as formatting expressions?

Question

I need adequate info on this with examples cuz I'm tired of getting errors as output when running codes 😢

Answer 1

A variable is a place holder it allocates space to store somthing

these are place holders in string formatting

%d
%s

Answer 2

I recommend to read through this. Really, because it is a complicated topic.
https://realpython.com/JUMP_LINK__&&__python__&&__JUMP_LINK-string-formatting/
There are many ways to do variable substitution and formatting in strings. My favorite method is the f-string (introduced in python 3.6) in which case you don't even need placeholders, you just embed the variable inside the text like so:
w = 'World'
print(f'Hello {w}!')

Answer 3

Thanks guys