On 2011-11-23 05:15, Chris Kavanagh wrote:
I was going over one of Derek Banas' tutorials on youtube, and came
across something I hadn't seen before. A variable with a list beside it
(see code below). He sets the variable, customer , equal to a dict. Then
uses the variable with ['firstname'],['lastname'], ect. I've never seen
this in my short programming life. What is this called?
That's the Python syntax to indexing dictionary keys (comparable to the
index of lists, tuples, ...)
In general, you set a value with
dictionary[key] = value
where "key" can be any immutable type (strings, numbers, tuples if they
just contain strings, numbers and other tuples) and "value" anything you
want to save for that key.
To get the value of a key, just use
dictionary[key]
Example:
>>> customer = {}
>>> customer["name"] = "Chris"
>>> customer["name"]
'Chris'
And is there any documentation on it??
The tutorial on dictionaries:
http://docs.python.org/tutorial/datastructures.html#dictionaries
The library reference on dictionaries:
http://docs.python.org/library/stdtypes.html#mapping-types-dict
Bye, Andreas
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