associative array

Gary Herron gherron at
Wed Mar 31 19:36:22 CEST 2010

Javier Montoya wrote:
> Dear all,
> I'm a newbie in python and would be acknowledge if somebody could shed
> some light on associative arrays.
> More precisely, I would like to create a multi-dimensional associative
> array. I have for example a list of students which are identified
> uniquely by their student IDs. Additionally, for each student I have
> some information: FirstName, LastName, etc.
> The array would have then the following form:
> [StudentID] => [FirstName][LastName][Telephone]...[ ... ]
> I would like to be able to access a field directly by using a
> StudentID
> [StudentID][FirstName]
> [StudentID][LastName]
> How could I manipulate such an array (create the array, add elements,
> access data)?
> Best wishes
Create a class for student with attributes for ID, FirstName, LastName, etc.

  class Student:
      def __init__(self, id, FirstName, ...):
 = id
          self.FirstName = FirstName

then whenever you create a student object, use a dictionary to associate 
the object with its is
  AA = {} # An empty dictionary
  s = Student(...)
  AA[] = s
  ... and repeat for many students...

Then to access a student's object given an id:
  s = AA[id]
  print, s.FirstName, s.LastName, ...

I'd *not* call this a multi-dimension association, but rather just an 
association between student objects and their ids.

Hope that helps,

Gary Herron

Gary Herron, PhD.
Department of Computer Science
DigiPen Institute of Technology
(425) 895-4418

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