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From: Terry Reedy <tjreedy@udel.edu>
Subject: Re: Yet another attempt at a safe eval() call
Date: Fri, 04 Jan 2013 07:24:04 -0500
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Xref: csiph.com comp.lang.python:36105

On 1/3/2013 6:25 PM, Grant Edwards wrote:
>
> I've written a small assembler in Python 2.[67], and it needs to
> evaluate integer-valued arithmetic expressions in the context of a
> symbol table that defines integer values for a set of names.  The
> "right" thing is probably an expression parser/evaluator using ast,
> but it looked like that would take more code that the rest of the
> assembler combined, and I've got other higher-priority tasks to get
> back to.

Will ast.literal_eval do what you want?

-- 
Terry Jan Reedy