Is it possible compiler.parse a statement, then change and then
execute/resolve it?
Background:
I'm probably to lazy to write my own parser.
I have such a statement as string: distance = x**2 + y**2
x and y are undefined, so it is no executable Python code, but it is
parseable. Now i'd like
beza1e1 [EMAIL PROTECTED] wrote:
I have such a statement as string: distance = x**2 + y**2
x and y are undefined, so it is no executable Python code, but it is
parseable. Now i'd like traverse through the AST and change Name('x')
for the value i have elsewhere. And finally let Python resolve
beza1e1 wrote:
Is it possible compiler.parse a statement, then change and then
execute/resolve it?
This should work:
from compiler.pycodegen import ModuleCodeGenerator
from compiler.misc import set_filename
from compiler import parse
tree = parse('foo = 42')
set_filename('foo',
Thank you! this compile/exec in context is the thing i wanted.
It is not that performant i think. But it should ease the prototyping.
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beza1e1 wrote:
Thank you! this compile/exec in context is the thing i wanted.
It is not that performant i think.
it's about as fast as it can get, as long as you only call compile when
the expressions change. (the example didn't show it, but the expr
code object can of course be reused with
