TypeError: sequence index must be integer

Question

I just have a problem with adding between every 3 characters a ",".

print totalpoints
points = ','.join([totalpoints[i:i+3] for i in range(0, totalpoints, 3)])

Output:

875
TypeError: sequence index must be integer

Answer 1

I don't know what you are actually trying to do. But If I am not wrong, following will solve your problem.

>>> totalpoints = 875123123 
>>> totalpoints = str(totalpoints)
>>> points = ','.join([totalpoints[i:i+3] for i in range(0, len(totalpoints), 3)])
>>> points
'875,123,123'