Finds longest word possible to write on 7 segment display with txt dictionary.

longest_word_7seg.py

import urllib.request

dictionaries: dict[str, str] = {
  "pl": "https://raw.githubusercontent.com/sigo/polish-dictionary/master/dist/pl.txt",
  "en": "https://raw.githubusercontent.com/dwyl/english-words/master/words.txt",
}

_7seg_possible_chars: str = "0123456789abcdefhijlnoprstuy"


def pick_dict(choice: str) -> str:
  if choice in dictionaries:
    return dictionaries[choice]
  return choice


def get_lower_words(url: str) -> list[str]:
  with urllib.request.urlopen(url) as stream:
    return stream.read().decode("UTF-8").lower().split('\n')


def find_longest(words: list[str], allowed_chars: str = _7seg_possible_chars) -> list[str]:
  longest: list[str] = []
  for word in words:
    if len(longest) > 0:
      if len(longest[0]) > len(word):
        continue
    valid = True
    for char in word:
      if char not in _7seg_possible_chars:
        valid = False
        break
    if valid:
      if len(longest) > 0 and len(longest[0]) == len(word):
        longest.append(word)
      else:
        longest.clear()
        longest.append(word)
  return longest


def main():
  chosen = input("Select a dictionary or enter a URL (EN/PL/URL) > ").lower()
  word_dict = pick_dict(chosen)
  print(f"Downloading {word_dict}...")
  words = get_lower_words(word_dict)
  print("Successfully downloaded!")
  print(f"Found {len(words)} words!")
  print("Checking longest word on 7-segment display...")
  longest = find_longest(words)
  print("These are found:")
  for i, v in enumerate(longest):
    print(f" {i + 1}. {v}")


if __name__ == "__main__":
  main()