CODEWITHSUNDEEP
python
AlyssaAlex
AlyssaAlex

Reputation: 716

How can I append a string item as a sublist item in a list?

How can I append a string type item always as a sublist to my main list?

list_of_similarities = []

list_of_similarities.append('A')
list_of_similarities.append('B')
list_of_similarities.append('C')
list_of_similarities.append('D')

Actual Output:

mylist = ['A', 'B', 'C', 'D']

Expected Output

mylist = [['A'], ['B'], ['C'], ['D']]

Upvotes: 1

Views: 76

Answers (3)

Jab
Jab

Reputation: 27495

You could also use the built in map method.

>>> list_of_similarities = list(map(list, ['A', 'B', 'C', 'D']))
>>> list_of_similarities
[['A'], ['B'], ['C'], ['D']]

Also for just uppercase letters you could even do this:

>>> from string import ascii_uppercase
>>> list(map(list, ascii_uppercase[:4]))
[['A'], ['B'], ['C'], ['D']]

Upvotes: 1

Sandipan
Sandipan

Reputation: 703

Use 

list_of_similarities.append(['D'])

Upvotes: 2

Aero Blue
Aero Blue

Reputation: 526

Simple solution using a list comprehension

list_of_similarities = [list(letter) for letter in ["A","B","C","D"]]

print(list_of_similarities)

Output:

[['A'], ['B'], ['C'], ['D']]

Upvotes: 1

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