使用文本文件创建字典时出现问题，该字典以字长为键，实际字本身为 Python 中的值

Question

I'm currently a beginner in Python taking an introductory course for Python and I'm having trouble with creating a hangman game in which we derive our words from a text file that has each word printed on a new line, where we then in a function choose a word at random based on the word length indicated by the user. I'm not sure how we are supposed to do that, I've uploaded my current code, the problem is when I print out the dictionary only the words from the text file actually get printed out, I'm not sure why the dictionary with the keys and values aren't getting printed out... I'm also not sure why my professor wants us to use a try and except in this function and how I'm supposed to use max_size.

Here's what I've currently done

def import_dictionary (dictionary_file):
    dictionary = {}
    max_size = 12
    with open ('dictionary.txt', 'a+') as dictionary:
        dictionary_file = dictionary.read().split()
        for word in dictionary_file:
            dictionary[len(word)] = word
    return dictionary

The function I'm using to print out

def print_dictionary (dictionary):
    max_size = 12
    with open('dictionary.txt', 'r') as dictionary:
        print(dictionary.read())

Answer 1

Try the following:

def import_dictionary(dictionary_file):
    dictionary = {}
    max_size = 12
    with open(dictionary_file, 'r') as f:
        words = f.read().split('\n')  # each word is on new line so split on newline: '\n'
        for word in words:
            length = len(word)
            if length > max_size:    # If word too long, ignore it
                continue
            elif dictionary.get(length) is not None:
                dictionary[length].append(word)  # If dict already has entry for word length, append word.
            else:
                dictionary[length] = [word] # Otherwise create entry
    return dictionary

Answer 2

Try this.

from collections import defaultdict
import random

def read_text_file():
    words = defaultdict(list)
    with open("file.txt","r") as f:
        text_file = f.read()
    text_file = text_file.split("\n")
    for wrd in text_file:
        words[len(wrd)].append(wrd)
    return words

def main():
   user_length = int(input())
   words = read_text_file()
   shuffle_words = random.sample(words[user_length])
   print(shuffle_words[0])