How do I do this? (eval() on the left hand side)
steven.bethard at gmail.com
Tue Dec 7 16:39:04 EST 2004
It's me wrote:
> How do I do something like this:
> I know that
> a = 3
> y = "a"
> print eval(y)
> would give me a print out of 3 - but how do I do something to the effect of:
> eval(y) = 4 # hopefully the value of a gets changed to 4
Generally, if you find yourself doing this, you may want to rethink your
program organization. That being said, if you are in the global scope,
one option looks something like:
>>> a = 3
>>> y = 'a'
>>> globals()[y] = 4
If you can give us some more context on why you want to do this, we can
probably suggest a better approach. There aren't too many places where
even advanced Python programmers need to use eval...
More information about the Python-list