I have the following section of Python:

```
for j in range(0,T):
for x in xrange(len(index)):
for y in xrange(x+1,len(index)):
if index(y) == index(x):
continue
```

For which I have been attempting to translate successfully from a MATLAB equivalent. In matlab, this operation is simple as follows:

```
for iter = 1:T
for i = 1:length(index)
for j = i+1:length(index)
if index(j) == index(i)
continue;
end
```

However, when I attempt to execute my code I receive a "numpy.ndarray object is not callable" error. Why does this arise, and how would I go about writing this in a proper python manner to successfully execute?