Evaluating a mathematical expression in a string

Question

stringExp = \"2^4\"
intVal = int(stringExp)      # Expected value: 16

This returns the following error:

Traceback (most recent call         


        

Answer 1

[I know this is an old question, but it is worth pointing out new useful solutions as they pop up]

Since python3.6, this capability is now built into the language, coined "f-strings".

See: PEP 498 -- Literal String Interpolation

For example (note the f prefix):

f'{2**4}'
=> '16'