Python lists indexes

Question

i have a litle question since iam new to python, i came from php and in php iam able to define array with explicit indexes

 array(
         "Index1" => array(),
         "Index2" => array()
         );

Iam wondering if iam able to do the same thing with lists in python, for example

["Index1" => [], "Index2" => []]

Tapuzi · Accepted Answer · 2014-01-04 13:36:01Z

2

>>> d = {"Index1": [], "Index2": []}
>>> d["Index1"]
[]

or

>>> d = dict(Index1=[], Index2=[])

answered Jan 4, 2014 at 13:36

Tapuzi

8858 silver badges9 bronze badges

Sign up to request clarification or add additional context in comments.

2 Comments

I think collections.OrderedDict would be more appropriate.

You may be right. The difference is that collections.OrderedDict is ordered, wheres dictionary is not.

Blender · Accepted Answer · 2014-01-04 13:39:00Z

0

The equivalent would be an ordered dictionary:

from collections import OrderedDict

d = OrderedDict([
    ('Index1', []),
    ('Index2', [])
])

Although order is rarely used, so a regular dictionary should be just fine in most cases:

d = {
    'Index1': [],
    'Index2': []
}

answered Jan 4, 2014 at 13:39

Blender

300k55 gold badges462 silver badges511 bronze badges