Python calculator - Implicit math module

You can use

from math import *

to import all constants and functions from the math module into your global scope.

if [ $ARGS -eq 1 ]; then
  eqn="$1"
  python -c "from math import *; b=$eqn; print str(b)"
fi

$ pc "pi*(2**2)"
12.5663706144

Excellent! Thanks!