You need to include the line import random
at the beginning of your program. This gives you access to the contents of the 'random' module such as random.choice().
This chapter of the tutorial talks about modules: http://docs.python.org/tut/node8.html
Kent
Kooser, Ara S wrote:
This is most likely a silly question and me not understanding python
enough. I am a mentor for some high school kids participating in a
supercomputing challenge. My background in programming is F77 (yeah
laugh it up) and I want the kids to learn python and use it for the
challenge. They picked a project to model the flow of smallpox in a city and
surroundings areas. So I saw the game of life and thought maybe they
could modify it for use as a smallpox model. My question is when I run
this code as is and execute the command to generate a world, I get the
following error:
Traceback (most recent call last): File "<pyshell#0>", line 1, in -toplevel- print_world(make_random_world(10, 10)) File "C:\Python23\gameoflife.py", line 12, in make_random_world world[i, j] = random.choice([LIVE, DEAD]) NameError: global name 'random' is not defined
Does "random" need to be defined after LIVE,DEAD or am I just missing something. I was trying to run this on my work computer which is a winXP machine running python 2.4.
Thanks, Ara
This is the part of the game of life program I am trying to get to run
LIVE, DEAD = '*', '.'
def make_random_world(M, N): """Constructs a new random game world of size MxN.""" world = {} for j in range(N): for i in range(M): world[i, j] = random.choice([LIVE, DEAD]) world['dimensions'] = (M, N) return world
def print_world(world): """Prints out a string representation of a world.""" M, N = world['dimensions'] for j in range(N): for i in range(M): print world[i, j], print
print_world(make_random_world(10, 10))
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