[Compiler-sig] Re: [Python-Dev] compiler-sig project for Python 2.3: new AST

[Jeremy Hylton]

On Wed, 20 Mar 2002 19:14:18 -0600
 Skip Montanaro <skip@pobox.com> wrote:
>     Jeremy> I haven't done a benchmark in a long time,
> but I recall that the
>     Jeremy> compiler-in-Python is at least 100x slower
> than compiler-in-C.
>     Jeremy> This makes starting up the interpreter to
> execute a small script
>     Jeremy> quite slow.
> 
> Okay, so let's see what hotshot says...  Is it obvious
> how I run the
> Python-based compiler (e.g., is there a main program
> script somewhere)?

Try "pydoc compiler" for the details.  You could compare the
performance of compiler.compile() against builtin compile().

I seem to recall that about 1/3 of the time was spent
transforming the parser module output into the AST.

Jeremy