>>> a,b=3,4 >>> x="a+b" >>> eval(x) 7 >>> y="x+a"
Now I want to evaluate y by substituting for the evaluated value of x.
eval(y) will try to add "a+b" to 3 and return an error. I could do
this,
>>> eval(y.replace("x",str(eval(x))))
10
but this becomes unwieldy if I have
>>> w="y*b"
and so on, because the replacements have to be done in exactly the
right order. Is there a better way?
Thanks,
Abhishek
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