I have a question in python lists

Question

If we want to len a list for example list=[ 1,2,3,[4,5,6]] and then write print(len(list)) the output is 6 or 4 ?? And if we want to run this should we use def for list ? Im confused AF ~T_T~

Answer 1

Hello my Friend, the answer is 4, and that's because remember, len gives you the total of Elements in the list, an element can be even a list, that's the reason

Answer 2

Marvel, my question was if you will need to get the content from *list in list* in the way i isplayed it, or if you need to keep it as a list in list. Don't be confused!

Answer 3

Do you need to get the content of the *list in list* like this: [1,2,3,4,5,6] ?

Answer 4

Where did you get your SyntaxError?

Answer 5

The output will be 4. Len function returns the number of elements in a list. Here there are for elements : 3 integers (1, 2 and 3) and a list.

#list
+ - 1 - + - 2 - + - 3 - + - ptr - +
|
------------------------------------
| #list in a list
+ - 4 - + - 5 - + - 6 - +

You see that you have 4 elements in variable 'list'.

Answer 6

jose ramirez thanks

Answer 7

4, because it count [...] as one

Answer 8

Mirielle🐶 [Inactive] hmmm ... thanx

Answer 9

HonFu mmm im not sure it was syntax error but it didnt run .

Answer 10

Théophile oh ... thnq

Answer 11

Lothar no but now im curious#^_^# ... how can it be ?

Answer 12

Lothar both (:

Answer 13

It will print 4. To count all elements, you can use this code:

list = [1,2,3,4,[5,6,8],[7,8,6,4]]
length = len(list)
for i in list:
if(type(i) == type([])):
length += len(i) - 1
print(length)