code: def is_hash(fhash):
      
  
      # Intentionally doing if/else statement for ease of testing and reading
      if re.match(re_md5, fhash):
          return True
      elif re.match(re_sha1, fhash):
          return True
      elif re.match(re_sha256, fhash):
          return True
      elif re.match(re_sha512, fhash):
          return True
      elif re.match(re_ssdeep, fhash):
          return True
      else:
          return False
docs: Returns true for valid hashes, false for invalid.