Assigning different values to multiple variables

Question

I have around 15 variables to be assigned different values.

var1 = val1
var2 = val2
#.....and, so on 

Should I declare them one by one, or by using a for loop?

Is there an inefficiency induced through a for loop, considering that looping increases time complexity only if variables are too many. I have only 15.

Reason for asking - I need to do this on several places for different set of variables, on the same code file. Just want to know a preferable way.

Answer 1

you can just do this:

[var1, var2, var3, ...] = [val1, val2, val3, ...];

you can also do this without the lists but this could be used for things like:

[var1, var2, var3] = [x**2 for x in range(1,5)]

to assign for example to this new variables the squares of 2, 3, 4.