Accessing class attribute

Rafael Justo · #1 July 2nd, 2009, 04:28 PM

Hi,

I'm new in python development (NEWBIE). While I was using Cheetah Templates I got a problem about accessing template variables.

I have an object like this (class Template):

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>>> class A:

...  x = 1

...  y = 2

...  z = 3

But I'm just going to know the attributes names "on the fly". How can I set/get this attributes if I have just a string with the name of the attribute?

I know that I can't do this:

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>>> print A."x"

  File "<stdin>", line 1

    print A."x"

              ^

SyntaxError: invalid syntax
 
>>> A."y" = 4

  File "<stdin>", line 1

    A."y" = 4

        ^

SyntaxError: invalid syntax

Any clues? =)

Best Regards!
Rafael

bvdet · #2 July 2nd, 2009, 04:38 PM

Use built-in function getattr().

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 >>> class A(object):

...     x = 1

...     y = 2

...     z = 3

...     

>>> getattr(A, 'x')

1

>>>

Rafael Justo · #3 July 2nd, 2009, 04:43 PM

Thanks bvdet!

The setattr method was perfect for me!
setattr(class, attribute, value)

Accessing class attribute

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