out of bounds error

[Peter230655]

I am running a simulation and I am getting this error:

I have had it before - but I forgot what it points to.
Thanks!

[moorepants]

In [1]: import numpy as np

In [2]: a = np.ones(5)

In [3]: a[8]
---------------------------------------------------------------------------
IndexError                                Traceback (most recent call last)
Cell In[3], line 1
----> 1 a[8]

IndexError: index 8 is out of bounds for axis 0 with size 5

[Peter230655]

Thanks!
I did not make the connection, because it said something about buffer access.

[moorepants]

That's because opty works in C most of the time.