get excerpt from text

get_excerpt.py

# get excerpt of article ————————————————————————————————————————————————————————————————
def get_excerpt(new_word, article_text, padding):

  # Article text
  text = article_text

  # Find the index of the new_word in the text
  # Convert both the text and the keyword to lowercase
  keyword = new_word
  text_lower = text.lower()
  keyword_lower = keyword.lower()

  # Find the index of the keyword in the lowercase text
  index = text_lower.find(keyword_lower)
  if index == -1:
      return None  # Keyword not found in text

  # Find the start and end indices of the excerpt
  start = max(0, index - padding)
  while start > 0 and text[start] != ' ':
      start -= 1
  end = min(len(text), index + len(keyword) + padding)
  while end < len(text) and text[end] != ' ':
    end += 1


  # Extract the excerpt and add ellipses if necessary
  excerpt = text[start:end].strip()
  if start == 0: # se for o início do texto
    excerpt = '"' + excerpt
  elif start > 0: # se início do excerto não for início do texto
    excerpt = '"...' + excerpt
  if end < len(text): # final do excerto
    excerpt = excerpt + '..."'

  # Remove any new lines or paragraphs from the excerpt
  excerpt = excerpt.replace('\n', ' ').replace('\r', '').replace('\r\n', ' ').replace('  ', ' ')

  return excerpt