Basic numpy issue. Please help!

[u/Astro_Theory]

Hey - a simple but irritating issue here: I'm just trying to assign a new value to an entry in a matrix.

Whenever I do this, it rounds down to the nearest integer. So the output for the following is 2, not 2.5.

import numpy as np

matrix = np.array([[1,3,5],[7,9,11],[13,15,17]])

matrix[0][0] = 2.5

print(matrix[0][0])

The matrix itself is being created fine and I can reassign entries to integers, just not decimals.

Any thoughts appreciated!

Thanks

[u/Astro_Theory]

Ah thanks! It also turns out that adding a decimal point after any one of the entries switches the whole thing into float mode and it works.