locate and read from certain lines within a file

[NicholasE]

Dear all,

I would like to make a small script that does the following:

I have a file that at some point there is a section:

...
...
a heading is here ....
1 2 3 4 5 6 7 8
9 10 22 22 336
11252 12 25 3 6
more words in this line
....
....

I would only like to read the lines between the "a heading is here" and "more words in this line"

any suggestions how to extract the data using python?

[vegaseat]

Are these lines the only totally numeric lines in your file?

[NicholasE]

Are these lines the only totally numeric lines in your file?

No they are not. There is a lot of text and numbers throughout the file.