Enter the user's input in the n-inner lists

Question

I am trying to figure out, how would it be possible to insert in an input number of inner lists of the list different users inputs?

n = int (input ("Please enter a number:"))
L = [[] for i in range (n)]

for i in range (n):
L[0:n].append (input ("Please enter 3 words or letters or numbers:"))

For example, user gives n = 3. Then the user is supposed to receive three times the question to enter a string. All three strings should enter accordingly each one into a separate inner list.

Three days of battle with this thing... Probably still dont understand how the Loop iteration works. :(

Answer 1

Did you mean something like this:

some_list=[ [] for i in range(n) ]
for i in range(n) :
some_list[i].append(input('Enter a string here: ')

Answer 2

I'd do it like this:

inner_list = []
for i in range(n):
inner_list.append([input()])
L.append(inner_list)

(Or the same model in list comp shape.)

One question:

Why don't you just append the user inputs? Is it necessary to put them into an extra list?

Without it, an inner list might look like this:

['first', 'second', 'and third input']

And one opinion:

Usually it would be more convenient to let the user decide on the fly, how many inputs they want to do. That could look like this:

inner_list = []
while True:
x = input()
if not x:
break
inner_list.append(x)
L.append(inner_list)

In this pattern, the user keeps appending as long as they like, but when they just hit enter, the list gets appended to the larger list.

Answer 3

Thank you! The second option is understanble for me and it works.

Another question has popped up: the user enters a string like "abc", can i slice it directly into the inner list as three strings "a", "b", "c"? And the second string "def" into "d", "e", "f" etc?

Answer 4

You can split any string by just using list(string).

Answer 5

Since 'Strings' are iterable in Python so you can use extend method of list to add each character of a string into a list or you can convert it directly into a list as above said by HonFu.