(Having gotten this off my chest :-)
In "Python in a Nutshell", Martelli writes, in at least two places, something like
"you should use exec only with specific, explicit dictionaries".
I would like to figure out how to do this [yes, for safety reasons :-), and also because I am curious] and, so far, I have been unsuccesful.
I have a "robot" that can do some actions like "move()" and "turn_left()". I can program this robot using python like this:
====
.def move_and_turn():
. move()
. turn_left()
.
.def draw_square():
. for i in range(4):
. move_and_turn()
.
.draw_square()
========
To execute such a program within my larger program, I use
exec code in globals()
where "code" is the little program above, and it works as expected. The question I have is: how do I do this with an explicit dictionary. I would *guess* that this is somehow equivalent to "how do I create a dictionary that has access only to robot instructions [move(), turn_left(), etc.] and Python's basic syntax" ... but I don't know how to do this.
Any help would be appreciated.
André _______________________________________________ Tutor maillist - Tutor@python.org http://mail.python.org/mailman/listinfo/tutor
