Read multiple .txt file in folder in python

Hi everyone I'm new in python,
I need to read the first 10 line of multiple .txt files (from s1 to s50) in folder and save these values of each file in another file (separately) and then read the second 10 lines of (s1 to s50) then save the second 10 lines in separate files, and so on untill read all data of files.
To clarify more: every time 10 values from the files are read and they are stored in separate files
any help please?!