Python code for 2.5 and 2.4?

[Joseph Turian]

On 25 fév, 16:02, Robert Kern <robert.k... at gmail.com> wrote:
> Joseph Turian wrote:
> > I was given code that was written for python 2.5, and uses simple
> > functions like 'all' which are not present in 2.4
>
> > I want to make the code 2.4 compatible. What is the best way to do
> > this?
>
> If it's a single file, put something like the following code near the top. If
> you have multiple modules, put it into a separate module, say compatibility.py,
> and change the other modules to import these functions from there.
>
> import sys
> if sys.version_info[:2] < (2,5):
>      def all(*args):
>          ...
>      def any(*args):
>          ...
> else:
>      # Only bother with this else clause and the __all__ line if you are putting
>      # this in a separate file.
>      import __builtin__
>      all = __builtin__.all
>      any = __builtin__.any
>
> __all__ = ['all', 'any']
>
> > If I define function 'all', then won't I break 2.5 compatability?
>
> No. Defining a function named the same thing as a builtin function will not
> break anything. You just wouldn't be using the efficient implementation already
> in Python 2.5. Using the if: else: suite above lets you have both at the expense
> of some clunkiness.
>
> --
> Robert Kern
>
> "I have come to believe that the whole world is an enigma, a harmless enigma
>   that is made terrible by our own mad attempt to interpret it as though it had
>   an underlying truth."
>    -- Umberto Eco

This is what I was looking for. Thanks!