Python3 Syntax error

Question

I am quite a new user in python. I am making a script to calculate some quantity like below

A = sum([( f * Rphi[i,i] + Rt[i,i]) * NN[i,i] for i range(0,2)]) + 2*sum([sum([(f * Rphi[i,j] + Rt[i,j]) * NN[i,j] for j in range(i+1,2)]) for i in range(0,1)])

f is defined as scalar value and all two indices quantities are defined as 3x3 matrix in previously.

This is just summing over indices. When I try to compile it, I got:

Error message

The error indicates that there is a syntax problem in the usage of for I in range(0,1) But I cannot find the problem in there.

Any comments or advice is really appreciated!

Answer 1

Syntax Errors are usually when you make a mistake in the code syntax. In this case, your first part of the code is

sum([( f * Rphi[i,i] + Rt[i,i]) * NN[i,i] for i range(0,2)])

should be

sum([( f * Rphi[i,i] + Rt[i,i]) * NN[i,i] for i in range(0,2)])