counter on for loop, reporting 1

I am simply trying to add a counter around my for loop, to count how many files are in my directory per qualification of the contains 'VCCS'... the logic is working for the iterating, as it's iterating through my directory the amount of times I have a file in... however my counter keeps reporting 1. Relevant lines are files_in_directory

I've tried moving the set 0, above the for and try, any thoughts?

if __name__ == "__main__":
    try:
        currentDT = datetime.datetime.now()
        files_in_directory = 0 # here
        for filename in os.listdir(config.DIRECTORY_LOCATION):
            if filename.__contains__('VCCS'):
                old_stdout = sys.stdout
                log_file = open("./logs/metrics.log","w")
                sys.stdout = log_file
                files_in_directory += 1 # here

                PENDING_RECORDS = FindPendingRecords().get_excel_data()
                # Do operations on PENDING_RECORDS

                # Reads excel to map data from excel to vital
                MAP_DATA = FindPendingRecords().get_mapping_data()

                # Configures Driver
                VITAL_ENTRY = VitalEntry()

                # Start chrome and navigate to vital website
                VITAL_ENTRY.instantiate_chrome()

                # Begin processing Records
                VITAL_ENTRY.process_records(PENDING_RECORDS, MAP_DATA)

                print(f"Date: ")
                print (str(currentDT))                
                print(f"Files in Directory #{files_in_directory}")

                sys.stdout = old_stdout
                log_file.close()  

    except Exception as exc:
        # print(exc)
        raise