How to convert a string list into an integer in python

10
votes

In my python Script I have:

user = nuke.getInput("Frames Turned On")
userLst = [user]
print userLst

Result: 

['12,33,223']

I was wondering How I would remove the ' in the list, or somehow convert it into int?

6
pythonstringlistint
You want to turn three numbers separated by commas into an int? How should that work? - Ignacio Vazquez-Abrams
@Ignacio: To explain what Nick probably means: If you "remove the '" in the list ['12,33,223'], you get [12,33,223] -- at least this is how I read it... - Sven Marnach

6 Answers

19
votes

Use split() to split at the commas, use int() to convert to integer:

user_lst = map(int, user.split(","))
9
votes

There's no ' to remove in the list. When you print a list, since it has no direct string representation, Python shows you its repr—a string that shows its structure. You have a list with one item, the string 12,33,223; that's what [user] does.

You probably want to split the string by commas, like so:

user_list = user_input.split(',')

If you want those to be ints, you can use a list comprehension:

user_list = [int(number) for number in user_input.split(',')]
1
votes
[int(s) for s in user.split(",")]

I have no idea why you've defined the separate userLst variable, which is a one-element list.

1
votes
>>> ast.literal_eval('12,33,223')
(12, 33, 223)
-1
votes
>>> result = ['12,33,223']
>>> int(result[0].replace(",", ""))
1233233
>>> [int(i) for i in result[0].split(',')]
[12, 33, 233]
-2
votes

You could use the join method and convert that to an integer:

int(''.join(userLst))

1233223