How to do a multidimensional array in python?

Question

I need to do a data structure in python just like this:

array(
 1 => array(url => "http://wwww.ff.com", msg => "msg 1..."),
 2 => array(url => "http://wwww.yy.com", msg => "msg 2..."),
 3 => array(url => "http://wwww.xx.com", msg => "msg 3..."), 
 );

I have search the documentation, but no clue. Can someone give me clue on how to do this?

Best Regards,

Answer 1

Simply use a list of dictionaries:

a = [{"url": "http://wwww.ff.com", "msg": "msg 1..."},
 {"url": "http://wwww.yy.com", "msg": "msg 2..."},
 {"url": "http://wwww.xx.com", "msg": "msg 3..."}]
print a[0]["url"]
# http://wwww.ff.com

Alternatively, you could use a list of tuples

a = [("http://wwww.ff.com", "msg 1..."),
 ("http://wwww.yy.com", "msg 2..."),
 ("http://wwww.xx.com", "msg 3...")]
print a[0][0]
# http://wwww.ff.com

or a list of named tuples:

from collections import namedtuple
UrlTuple = namedtuple("UrlTuple", "url msg")
a = [UrlTuple(url="http://wwww.ff.com", msg="msg 1..."),
 UrlTuple(url="http://wwww.xx.com", msg="msg 2..."),
 UrlTuple(url="http://wwww.yy.com", msg="msg 3...")]
print a[0].url
# http://wwww.ff.com

Answer 2

Data types in Python can be freely nested:

multi = [[1, 2, 3], [4, 5, 6]]

If you need a more indepth solution, NumPy has a powerful selection of array handling tools.

Answer 3

You are looking for dictionaries:

[{"url":"http...", "msg":"msg 1..."}, {"url":"http...", "msg":"msg 12..."}, ...]