Copying selected lines from files in different directories to another file

Question

I have a directory with many subdirectories, containing files. I want to open the files ending with "root.vrpj" or "root.vprj", in "App_integrations" folder and copy the lines containing the word "table" to another file.

Until now I've managed to visit each file with this code:

for root, dirs, files in os.walk(movedir):
for filename in files:
    if filename.endswith(("root.vrpj", "root.vprj")):

The problem is that what I have now are just the names of the files I want to visit and I'm stuck here.

Answer 1

I finally solved it

    import os

rootdir = my root folder

# creates a file f that contains all the lines of the files 
# with "root.vrpj" or "root.vprj" in their name
# and who are inside "App_integrations" folders
# without duplicates

#creating the big file with all the file containing the lines I need
f = open('final_file.txt', 'a')
for root, dirs, files in os.walk(rootdir):  
    for filename in files:
        if (filename.endswith(("root.vrpj", "root.vprj")) and ("App_Integration" in os.path.join(root, filename))):
            full_name = os.path.join(root, filename) 
            data = open(full_name).read()
            f.write(data + "\n")                 
f.close()

#copying the lines I need to f1 without duplicates
lines_seen = set()
f = open('final_file.txt')
f1 = open('testread1.txt', 'a')
doIHaveToCopyTheLine=False
for line in f.readlines():
    if (("Table" in line) and (line not in lines_seen)):
        doIHaveToCopyTheLine=True
        if doIHaveToCopyTheLine:
            f1.write(line)
            lines_seen.add(line)
f1.close()
f.close()