>>You misused the context. It is not about using print("") in Python 2 - it is
>>about using print "" in Python 3, which is just what happen when users will
>>try to use old SConstruct files with Python 3.
I think this is an important point about python 2 to 3.
We have to think of Scons as a API not as python code at times. It hard to
separate at some points.. but the random usage of import pythonpackage can make
it so sconstructs that exist will not port.
In Parts at least I have this covered with a API for printing message ie …
SConsEnvironment.PrintError
SConsEnvironment.PrintWarning
SConsEnvironment.PrintMessage
SConsEnvironment.VerboseMessage
However there are probably other items I missed in my add-on. I don’t see how
we can support python 3 without some instability. On the other hand the
instability will allow us to find the weak points in the API we need to fill
in. The example here of printing can be solved with a API addition, and or
telling people to use print() if they want to be portable between python 2 and 3
Jason
From: [email protected] [mailto:[email protected]] On
Behalf Of anatoly techtonik
Sent: Friday, February 22, 2013 4:53 PM
To: SCons developer list
Subject: Re: [Scons-dev] Why we need to release separate SCons3 for Python 3
On Fri, Feb 22, 2013 at 9:42 PM, Russel Winder
<[email protected]<mailto:[email protected]>> wrote:
On Fri, 2013-02-22 at 18:10 +0300, anatoly techtonik wrote:
[…]
> Every construct of Python 2.x that is not compatible with Python 3 will
> give errors - print statements is the most obvious.
Not entirely true. print statements/function calls call be written to
be Python 2 and Python 3 compliant, or:
from __future__ import print_function
You misused the context. It is not about using print("") in Python 2 - it is
about using print "" in Python 3, which is just what happen when users will try
to use old SConstruct files with Python 3.
--
anatoly t.
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