I'm trying to search multiple directories with hundreds of different text files with random text in them, but I'm struggling

Question

I have hundreds of little text files in multiple folders. In each text file is loads of random letters and symbols and I have been tasked with finding certain information like "HSBC" and "91274163" and others. I am very new to coding and I am struggling quite a lot, I do not have long left to complete this so if anyone can help I'd appreciated

import os
FILENAMES=[]

for root, dirs, files in os.walk(r"****MY PATH****"):
    for filename in files:
        if filename.endswith(".txt"):

            FILENAMES.append(filename)
            print(filename)

print('\n')

This is the first part of my code, Which displays all the text files and then exits.

for FILENAME in FILENAMES:
    print(FILENAME," contains the following function:\n")
    f1=open(FILENAME,'r')
    for line in f1:
        if ("HSBC") in line:
            print(line)
        else:
            pass
    print('\n')
    f1.close()

As soon as I add this part of the code I get "

f1=open(FILENAME,'r')
       ^^^^^^^^^^^^^^^^^^
FileNotFoundError: [Errno 2] No such file or directory: 'File-06Ijg.txt'

I have tried many other scripts, I encounter various different encoding errors etc. At least with this script I can display all the text files so im trying to figure this one out

Answer 1

I'm really sorry, should've tested before answering. Shouldn't be os.path.join(dirs, filename) but os.path.join(root, filename) instead.

Try this:

import os
FILENAMES=[]

for root, dirs, files in os.walk(r"****MY PATH****"):
    for filename in files:
        if filename.endswith(".txt"):
            FILENAMES.append(os.path.join(root, filename))
            print(filename)

print('\n')

for FILENAME in FILENAMES:
    print(FILENAME," contains the following function:\n")
    with open(FILENAME,'r', encoding="utf-8") as f1:
        for line in f1:
            if "HSBC" in line:
                print(line)
    print('\n')

Edit: Typo, os.join -> os.path.join

Answer 2

add the changes in your first function

import os
FILENAMES=[]

for root, dirs, files in os.walk(r"****MY PATH****"):
    for filename in files:
        if filename.endswith(".txt"):
            # this line with get complete path
            file_path = os.path.join(root,filename)
            FILENAMES.append(file_path)
            print(file_path)

print('\n')