How to use python to convert a string to a list?

Question

As in the title, I want to convert the string 'abc' to ['abc'].

My code is as follows. Why is the codes obtained as None?

How can I write it correctly?

code = 'abc'
codes = []
if code != '':
    codes = codes.append(code)

Asked By: jaried

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Source

Answer 1

list.append operates in-place. It doesn’t return a result (thus, it returns None. You’re assigning this to codes, hence you end up with codes = None.

You just need to call append:

code = 'abc'
codes = []
if code != '':
    codes.append(code)

better yet, use a list literal:

code = 'abc'
codes = [code] if code else []

Answered By: Alexander

Answer 2

You made a simple mistake. Instead of writing codes = codes.append(code) you need only codes.append(code).

Answered By: Aynos

How to use python to convert a string to a list?

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