Thanks for the response Matthias! I have already tried that, but no error. I tried even the way the line is given in the source code. Also, the version of python is reported as I launch the interpreter:
carlosp@papa ~ $ python Python 2.6.6 (r266:84292, Jan 19 2011, 11:02:33) [GCC 4.4.4] on linux2 Type "help", "copyright", "credits" or "license" for more information.
from math import pi exit()
carlosp@papa ~ $ python Python 2.6.6 (r266:84292, Jan 19 2011, 11:02:33) [GCC 4.4.4] on linux2 Type "help", "copyright", "credits" or "license" for more information.
from math import log as _log, exp as _exp, pi as _pi, e as _e, ceil as _ceil exit()
Thanks for your interest, Carlos