[Python-3000] print() parameters in py3k

[Jim Jewett]

On 11/20/06, Barry Warsaw <barry at python.org> wrote:
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> On Nov 20, 2006, at 12:14 PM, Josiah Carlson wrote:
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> > How much print statement rewriting do you want to do?  Me, I'd like to
> > get away with as little as possible.  Adding parenthesis isn't that
> > bad.
> > Changing everything to use a printf-style would be 1) annoying, 2)
> > unnecessary, and 3) I hate printf.

> Are we going to include a flawless transformation script for Python
> 3k?  If not, then I'm pretty much resigned to rewriting them by hand
> anyway.

Assuming no further changes to PEP 3105, then it should be possible,
at least for the print statement.

Just parse the thing into statements; when you get to a print
statement make the string replacement before writing it back out.

  The "print" literal translates into "print(" ... ")"

  ">>" file_expression moves to the end and translates into
"file="file_expression

  the printable_expression stays the same

  a trailing comma translates into "end=''" (an empty string)

  (legacy code never uses the sep keyword)

-jJ