[Python-Dev] Passing compile(...,'exec') code to 'eval' (original) (raw)
Armin Rigo arigo at tunes.org
Thu May 6 04:51:16 EDT 2004
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Hello Brett,
On Wed, May 05, 2004 at 11:23:16AM -0700, Brett C. wrote:
Is this a bug, or are the docs wrong? I am hoping it is the former since if it is the latter my thesis just got a big caveat pasted into it about how 'eval' can cause problems and invalidate the type inferencing in irreparable ways.
There is another improbable way to bind variables with eval, with list comprehensions:
eval("[x for x in [3]]") [3] x 3
If the goal is not security but type inference, I guess both this and the compile() trick should be considered as outside any reasonable spec.
A bientot,
Armin.
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