How to add double quotes in a list of list Python

Question

I ran into a problem.

Got a dataset as such:

dataset = [['9874, 209384, 20938'], ['9874,209384, 20938'], ['9874, 209384, 20938']]

Initially wanted to run Apriori on it but the problem is that the individual item in the list of list is not in quotation mark.

Desired output:

dataset = [['9874', '209384', '20938'], ['9874', '209384', '20938'], ['9874', '209384', '20938']]

How should I do it?

Answer 1

You can use split function.

x =[['9874, 209384, 20938'], ['9874,209384, 20938'], ['9874, 209384, 20938']]

x = [i[0].split(",") for i in x]
print(x)

// [['9874', ' 209384', ' 20938'], ['9874', '209384', ' 20938'], ['9874', ' 209384', ' 20938']]

Answer 2

Try:

   res =  [ i[0].split(", ") for i in dataset]

---

res:

[['9874', '209384', '20938'],
 ['9874,209384', '20938'],
 ['9874', '209384', '20938']]

Answer 3

As per I can see, each list of lists ie ['9874, 209384, 20938'] has a string inside this list. Means the whole value '9874, 209384, 20938' is a string. So, you can try this:

dataset = [['9874, 209384, 20938'], ['9874,209384, 20938'], ['9874, 209384, 20938']]
 """ Create an empty list"""
emp_list = []

for i in range(len(dataset)):
   emp_list.append(dataset[i][0].split()

What I did was took strings of each list, and split them and append it to the empty list. Now your dataset would look like this:

emp_list = [['9874,', '209384,', '20938'], ['9874,209384,', '20938'], ['9874,', '209384,', '20938']].

Hope thos helps.

Answer 4

Because your example has inconsistent spacing, this will be more tolerant:

>>> [[y.strip() for y in x[0].split(',')] for x in dataset]
[['9874', '209384', '20938'], ['9874', '209384', '20938'], ['9874', '209384', '20938']]