split text file with lines into mutiple lines by nth numbers

Question

I am trying make script that split text file with lines into multiple lines group in python3 here is an example:

text file contains:
1
2
3
4
5
6
7
8
9
10

output that I want:
first chunk
1
2
3

second chunk
4
5
6

third chunk
7
8
9

fourth chunk
10

how can I do that? and thank you in advance