Find specific subdir, open files and find specific lines that are missing from a file

[tester_V]

Hi,

I have a directory with bunch of subdirectories each subdir has a one file only,
I need to process files only form the subdirectories that have letter “H” in a name.
Each file will contain lines with the words "CELL-1", "CELL-2" up to "CELL-12 "- I’m interested in those lines .
I'd like to scan the file line by line and find/print "CELL-XX" lines for processing that are present in a file and the ones that are missing from a file.

Something like this:

output_file_a.write()
line CELL-1 -missing
line CELL-2 - infile
line CELL-3 -missing
and so on.....

output_file_b.write()
line CELL-1 -infile
line CELL-2 - infile
line CELL-3 -missing
and so on.....
I can find all the files and print out “CELL-xx” lines that are in each file but not the one that are missing.
Thank you.

import os
import pathlib

path = 'c:/path_tosubdirs/'
mytof = 'H' 

for file in os.listdir(path):
    hdir_f = os.path.join(path, file)
    
    if mytof in hdir_f :                  ### Directories with 'H" in name
        path2 = hdir_f
        for file1 in os.listdir(path2):
            hdir_f1 = os.path.join(path2, file1)
            print ("DIR\path\file ->>",hdir_f1)

            with open (hdir_f1) as cells_file : 
                for el in cells_file :
                    if 'CELL-' in el :
                        el=el.rstrip()
                        print("CELL-xx ", el)