Hi,
I wrote a random walk program which you will find below. When I run it from the terminal, it gives error which I am not able to figure out what could be wrong. From the bash shell, I give a command
>python2.4 random.py
It gives error:
···
Traceback (most recent call last):
File “random.py”, line 2, in ?
from pylab import *
File “/usr/lib/python2.4/site-packages/pylab.py”, line 1, in ?
from matplotlib.pylab import *
File “/usr/lib/python2.4/site-packages/matplotlib/pylab.py”, line 196, in ?
import mlab #so I can override hist, psd, etc…
File “/usr/lib/python2.4/site-packages/matplotlib/mlab.py”, line 58, in ?
import sys, random
File “/home/ofenerci/workspace/random.py”, line 11, in
?
if (rand() > 0.5):
NameError: name ‘rand’ is not defined
[3] Done gedit random.py
When I write the program step by step inside the python shell or run it inside the python-idle, everything goes smoothly and it doesn’t give any error. I don’t know why gives error, If I run it from the terminal.
thanks,
Ahmet Nurlu
Random.py Program:
from pylab import *
npts=1000
nplot=10
for i in range(0,nplot):
xplot=[]
x=0.0
for i in range(0,npts):
if (rand() >
0.5):
x=x+1
else:
x=x-1
xplot.append(x)
plot(xplot,‘g’)
hold(True)
show()
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