Using double square brackets?

Question

Using double square brackets?

In a file using an older version of Python, I found the following piece of code:

PROP_UI_COMBO = 'Prop_UI_ComboBox'
PROP_UI_COMBO[[]] = [_[1], [x for x in range(-1, 10)] + [26, 28, 30]]

And I'm wondering what it means to install PROP_UI_COMBO[[]]

. What do the double brackets mean? Also, (I may be wrong) I believe this _[1]

is only a temporary list [x for x in range(-1, 10)]

. So, as my question, what is [[]]

for, and what is the equivalent in Python 3.4?

+3

python python-3.x

Zach gates 04 jan. At 4:54 am

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1 answer

Ethan furman · Accepted Answer · 2015-01-04T18:13:55+0000

These two lines are not executed by Python - if they were, an exception would be raised.

Using double square brackets?

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