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
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