why i get this traceback?
<p>This is part of my code:</p>

<pre><code>if ind_1&lt;&gt;0:               
rbrcol=[]
brdod1=[]
for i in range(27):
    if Add_Cyc_1[1,i]!=0:
        rbrcol.append(Add_Cyc_1[0,i])  
        brdod1.append(Add_Cyc_1[1,i]) 
    Probrani_1=vstack((rbrcol,brdod1))


pok=0
for i in (rbrcol):  
 pok+=1         
 broj1=0
 for j in range(21):
     if SYS_STATE_1[i,j]==0:
         broj1+=1                       
         if broj1 &lt;= Probrani_1[1,pok-1]:  
            SYS_STATE_1[i,j]=123456  
</code></pre>

<p>And when i run program i get this:</p>

<pre><code>Traceback (most recent call last):
  File "C:/Python26/pokusaj2.py", line 157, in &lt;module&gt;
    for i in (rbrcol):
NameError: name 'rbrcol' is not defined
</code></pre>

<p>What i do wrong???</p>
