add check for duplicate hash values

import argparse

from pathlib import Path

from hashlib import md5

from collections import Counter

def get_hash_line_for_file(file: Path, experiment_dir: Path):

    wav_files = sorted(experiment_dir.glob("proc_output*/**/*c??.wav"))

    hashlines = [get_hash_line_for_file(f, experiment_dir) for f in wav_files]

    count = Counter([line.split()[-1] for line in hashlines])

    duplicates = [line for line in hashlines if count[line.split()[-1]] != 1]

    if len(duplicates) != 0:

        print("Found duplicate hashes in these lines:")

        for dup in duplicates:

            print(dup)

    with open(out_file, "w") as f:

        f.writelines(hashlines)