I have always been known to write really sloppy code. Can someone help me rewrite the the following code in a more neat manner.

import os import hashlib import sys import time  file_list = []  rootdir = "C:/"  print("Program starting!") print("[+]Collecting virus definitions and allocating memory[+]")  for subdir, dirs, files in os.walk(rootdir):     for file in files:         #print os.path.join(subdir, file)         filepath = subdir + os.sep + file          if filepath.endswith(".exe") or filepath.endswith(".dll"):             file_list.append(filepath)             #print(filepath)  print("[+]Virus definition and memory allocation complete...[+]") print("[+]Starting scan...[+]") def countdown():     for x in range(4):         print(x+1)         time.sleep(1)  countdown()  def Scan():     infected_list = []     for f in file_list:         virus_defs = open("VirusLIST.txt", "r")         file_not_read = False         print("\nScanning: {}".format(f))         hasher = hashlib.md5()         try:             with open(f, "rb") as file:                 try:                     buf = file.read()                     file_not_read = True                     hasher.update(buf)                     FILE_HASHED = hasher.hexdigest()                     print("File md5 checksum: {}".format(FILE_HASHED))                     for line in virus_defs:                         if FILE_HASHED == line.strip():                             print("[!]Malware Detected[!] | File name: {}".format(f))                             infected_list.append(f)                         else:                             pass                 except Exception as e:                     print("Could not read file | Error: {}".format(e))         except:             pass     print("Infected files found: {}".format(infected_list))     deleteornot = str(input("Would you like to delete the infected files (y/n): "))     if deleteornot.upper() == "Y":         for infected in infected_list:             os.remove(infected)             print("File removed: {}".format(infected))     else:         print("Executed with exit code 0")         os.system("PAUSE") Scan()