Python - Create a certain "number" of lists from user input "number"

Question

New to Python and, programming as a whole, and not completely sure if this is possible but is there a way to create a "number" of lists based on an inputted "number"?

Code should function as follows:

Ask user how many lists they want to create (Ex. user types 3)
Code will create three separate lists (Ex. list1 = [], list2 = [], list3 = [])

Note: I need lists specifically. No dictionaries, global, etc.

score 1 · Accepted Answer · answered Apr 11 '18 at 19:01

1

One simple way to accomplish this is to simply store lists in a list of lists as such

num_lists = int(input('How many lists?'))
lists = [[] for i in range(num_lists)]

Then each list can be accessed by an index (for example list1 = lists[0]).

answered Apr 11 '18 at 19:01

nico

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Wow! I didn't even think/know you could store lists in a list of lists. That definitely solves it. Thank you!!! – curiousgeorge Apr 11 '18 at 20:18

yoyoyoyo123 · Answer 2 · 2018-04-11T19:10:37.817

1

here is a solution

num = int(input('How Many?: '))
all = {'list'+str(i+1):[] for i in range(num)}
print(all)
print(all['list1'])

sample output

How Many?: 3
{'list2': [], 'list3': [], 'list1': []}
[]

edited Apr 11 '18 at 19:10

answered Apr 11 '18 at 19:03

yoyoyoyo123

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I guess I should've initially specified I didn't want to use dictionaries. Nonetheless, I see the code is essentially the same. Thanks for the future reference!!! – curiousgeorge Apr 11 '18 at 20:28

score 0 · Answer 3 · answered Apr 11 '18 at 19:06

0

lists=[[] for i in range(int(input('enter the number of list : ')))]

then you can access the list as index

first list

list1 =lists[0]

answered Apr 11 '18 at 19:06

Roushan

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Oh you can further simplify the code. I SEE!!! Thanks Roushan45!!! – curiousgeorge Apr 11 '18 at 20:26

Python - Create a certain "number" of lists from user input "number"

3 Answers3