python error running LaBOX.py

[mglgc]

Hi,
First of all, thank you for your code development and its free availability to all scientific community.
Running LaBOX under python3 gives you code type errors for functions defined both at lines 72 and 92. As example, below attached error lines for one of them.
Thank you very much in advance for your reply.

Traceback (most recent call last):
File "./LaBOX.py", line 72, in
def get_coordinates(data: list[str], ext: str) -> list[float]:
TypeError: 'type' object is not subscriptable
[cssdbmgl@login210-19 ~]$ ./LaBOX.py -h
Traceback (most recent call last):
File "./LaBOX.py", line 72, in
def get_coordinates(data: list[str], ext: str) -> list[float]:
TypeError: 'type' object is not subscriptable