list.str reversed

Question

Possible Duplicate:
Converting a string that represents a list, into an actual list object

Having a string like this:

"[81, 102, 114, 132, 194, 210, 228, 317, 357, 358, 379, 396, 407, 417, 418, 420, 470, 471, 506, 526, 533, 538]"

How can I parse it easily into the corresponding list?

I know I could use the re module or splitting by ", ", etc.

Is there any already existing function to do it?

score 5 · Accepted Answer · answered Dec 18 '12 at 20:37

Use ast.literal_eval():

>>> import ast
>>> s = "[81, 102, 114, 132, 194, 210, 228, 317, 357, 358, 379, 396, 407, 417, 418, 420, 470, 471, 506, 526, 533, 538]"
>>> ast.literal_eval(s)
[81, 102, 114, 132, 194, 210, 228, 317, 357, 358, 379, 396, 407, 417, 418, 420, 470, 471, 506, 526, 533, 538]

score 1 · Answer 2 · answered Dec 18 '12 at 20:35

1

>>> l = "[81, 102, 114, 132]"
>>> map(int, l.strip("[]").split(", "))
[81, 102, 114, 132]

For Python 3+ you need to make list from map iterator:

>>> l = "[81, 102, 114, 132]"
>>> list(map(int, l.strip("[]").split(", ")))
[81, 102, 114, 132]

answered Dec 18 '12 at 20:35

Alexey Kachayev

6,106
27
24

score 0 · Answer 3 · answered Dec 18 '12 at 20:37

0

The most direct way is to use eval(). That's often considered bad practice, though, because it can lead to security problems.

answered Dec 18 '12 at 20:37

PeterBB

343
2
9

3

`ast.literal_eval` is equally direct, and has no security issues. – Fred Foo Dec 18 '12 at 20:37

list.__str__ reversed

3 Answers3

list.str reversed