python - 有条件地合并文本文件中的行

Question

我有一个文本文件，其中包含常见的拼写错误及其更正。

同一单词的所有拼写错误都应位于同一行。

我确实做了一些工作，但不是针对同一个单词的所有拼写错误。

misspellings_corpus.txt(片段):

I'de->I'd
aple->apple
appl->apple
I'ed, I'ld, Id->I'd

期望:

I'de, I'ed, I'ld, Id->I'd
aple, appl->apple

模板:错误1，错误2，错误N->正确

---

尝试:

lines = []
with open('/content/drive/MyDrive/Colab Notebooks/misspellings_corpus.txt', 'r') as fin:
  lines = fin.readlines()

for this_idx, this_line in enumerate(lines):
  for comparison_idx, comparison_line in enumerate(lines):
    if this_idx != comparison_idx:
      if this_line.split('->')[1].strip() == comparison_line.split('->')[1].strip():
        #...

correct_words = [l.split('->')[1].strip() for l in lines]
correct_words

Answer 1

将单词的正确拼写存储为字典的键，该字典映射到该单词的一组可能的拼写错误。该词典旨在让您轻松找到您要更正的单词，该集合旨在避免重复拼写错误。

possible_misspellings = {}

with open('my-file.txt') as file:
  for line in file:
    misspellings, word = line.split('->')
    word = word.strip()
    misspellings = set(m.strip() for m in misspellings.split(','))

    if word in possible_misspellings:
      possible_misspellings[word].update(misspellings)
    else:
      possible_misspellings[word] = misspellings

然后你可以迭代你的字典

with open('my-new-file.txt', 'w') as file:
  for word, misspellings in possible_misspellings.items():
    line = ','.join(misspellings) + '->' + word + '\n'
    file.write(line)