Can i affect all items of a list into multiples variables ?

Question

I have a list like [1,2,3,4] and i Want to have all values into variables like a=1 b=2 c=3 d=4
But the lenght of my list can change

Answer 1

Dorian
I did mistake. My variant is only output. Sorry.
HonFu , your answer made me reread the condition. Thank you!

Answer 2

Dorian here is your answer.this code create a multiple variable by separating the each value of list without knowing the length of the list.

ll = ['xx','yy','zz','pp','jj']
for n, val in enumerate(ll):
globals()["var%d"%n] = val

print(var4) #output=jj
print(var3) #output=pp
print(var) #output=xx
#etc.....

But this is not a good practice if you are creating multiple variables in these manners.let suppose if you have 1000 variables what will you do with it.

Answer 3

Dorian
My be function ord(char) help you?

Answer 4

Dorian
Ord is ASCII code of char

Answer 5

Maninder $ingh I didn't know you could do it without exec(), good one!

Answer 6

Dorian
Try so:

s=[1,5,8,9,11]
for i in range(len(s)):
print(str(s[i])+" - "+chr(ord("a")+i))

Answer 7

Dorian
You can connect my answer and from HonFu. Create a new dictionary

Answer 8

Aymane Boukrouh with the help of globals function.

Answer 9

Yes HonFu but i don't know how in avance the lenght of the list or dictionnary

Answer 10

rodwynnejones my code can very easily be tweaked to as many variables as you want, with less than 5 lines of code

Answer 11

Dorian, what sort of operation do you need to perform on the user-provided values?

Depending on what you want to do, there might be different good options.

Also, why do you need the values to have names in the first place?

Answer 12

Have you thought about using a dictionary? It is not exactly the same, but you can give names to your values.

d = {'a': 5; 'b': 7}
print(d['a'])

Output: 5

Answer 13

Thank you Petr, but Indeed values are not assigned

Answer 14

Dorian here is the code:

https://code.sololearn.com/cBVhBfHv3o63/?ref=app

Answer 15

global a
global b
global c
global d
mylist = [1,2,3,4]
if len(mylist) == 2:
a, b = mylist
elif len(mylist) == 3:
a, b, c = mylist
elif len(mylist) == 4:
a, b, c, d = mylist
# and so on.

print(a, b, c, d)
#note: it does work without the global declaration, but my IDE gives me a warning..so I've included it.

Answer 16

rodwynnejones that's never a good stategy, what about a list of 1000 items ? Also, why use global variables ?

Answer 17

Thank you Aymane your programme work, it's because we actually have a project to do. In the first question, we have defined a function in which we had already put our lists. However, for the second one, we need to modify these lists. So we actually decided to ask the user to put his lists. But we don’t know how can we use the same program as before because we had defined a variable for each item of the list. Consequently, do we need to change the program or do we have something to help us to define the variables.

Answer 18

Dorian well I hope this was what you needed. In naming, it is better to use a1, a2, a3... instead of a, b, c... because it would be more readable

Answer 19

@Aymane Boukrouh
I think I miss interpreted the warning my IDE was giving me (I though it was telling me that the variables were local to the "if elif" statements).

1000 items?..try your code with more than 26 items.

Answer 20

What's with this one:
https://code.sololearn.com/cafQM33Xo6rv/?ref=app