Group Magic Bytes | Python script that group Magic Bytes of files in folder, show retrived bytes and show associated file. This is not the final version!

group_magic_bytes.py

#!/bin/env python3
from sys import argv, stderr
from os import listdir, path
import binascii

linkPath = path.normpath(argv[1])

if not path.exists(linkPath):
    print(f"Folder doesn't exists: [{linkPath}]", file=stderr)
    exit(1)

if not path.isdir(linkPath):
    print(f"Not a folder: [{linkPath}]", file=stderr)
    exit(1)

fileMagiks = {}

linkFiles = [f for f in listdir(linkPath) if path.isfile(path.join(linkPath, f))]
for f in linkFiles:
    fb = open(path.join(linkPath, f), "rb")
    fileMagik = fb.read(4)
    if fileMagik not in fileMagiks:
        fileMagiks[fileMagik] = {"refs": []}
    fileMagiks[fileMagik]["refs"].append(f)
    fb.close()

for fileMagik in fileMagiks:
    print(f"{fileMagik} : {fileMagiks[fileMagik]['refs']}")
    #print(f"0x{binascii.hexlify(fileMagik).decode()} : {fileMagik.decode()}")