old_contents: #!/usr/bin/env python3
  
  import os
  import sys
  import requests
  from flask import Flask, request, make_response
  
  app = Flask(__name__)
  
  def post_comment(issue_id, body):
      url     = '{}/repos/{}/issues/{}/comments'.format(GITHUB_API_URL, REPO_SLUG, issue_id)
      headers = {'Authorization': 'token ' + BOT_TOKEN}
      data    = {'body': body}
  
      return requests.post(url, json=data, headers=headers)
  
  
  def check_already_commented(issue_id):
      url  = '{}/repos/{}/issues/{}/comments'.format(GITHUB_API_URL, REPO_SLUG, issue_id)
      resp = requests.get(url)
  
      if resp.status_code != 200:
          # GitHub API error, let's say True in this case to avoid problems.
          return True
  
      comments = resp.json()
      print(comments)
      return any(c['user']['login'] == 'tldr-bot' for c in comments)
  
  
  @app.route('/', methods=['POST']) # old route, to be removed
  @app.route('/comment', methods=['POST'])
  @app.route('/comment/once', methods=['POST'])
  def comment():
      data = request.get_json()
  
      if data is None:
          return make_response('Invalid JSON or inappropriate Content-Type.', 400)
  
      pr_id        = data.get('pr_id')
      comment_body = data.get('body')
  
      # Check if request is valid.
      if pr_id is None or comment_body is None:
          return make_response('Missing required JSON fields', 400)
  
      # If needed, check if already commented.
      if request.path == '/comment/once' and check_already_commented(pr_id):
          return make_response('already commented', 200)
  
      # Post comment.
      resp = post_comment(pr_id, comment_body)
  
      if resp.status_code != 201:
          return make_response(resp.text, 500)
  
      return make_response('success', 200)
  
  
  @app.route('/status', methods=['GET'])
  def status():
      # Health check entpoint for monitoring purposes.
      return make_response('ok', 200)
  
  
  ################################################################################
  
  GITHUB_API_URL = 'https://api.github.com'
  BOT_TOKEN = os.getenv('BOT_TOKEN')
  REPO_SLUG = os.getenv('REPO_SLUG')
  
  if BOT_TOKEN is None or REPO_SLUG is None:
    print('Needed environment variables are not set.')
    sys.exit(1)
  
new_contents: #!/usr/bin/env python3
  
  import os
  import sys
  import requests
  from flask import Flask, request, make_response
  
  app = Flask(__name__)
  
  def post_comment(issue_id, body):
      url     = '{}/repos/{}/issues/{}/comments'.format(GITHUB_API_URL, REPO_SLUG, issue_id)
      headers = {'Authorization': 'token ' + BOT_TOKEN}
      data    = {'body': body}
  
      return requests.post(url, json=data, headers=headers)
  
  
  def check_already_commented(issue_id):
      url  = '{}/repos/{}/issues/{}/comments'.format(GITHUB_API_URL, REPO_SLUG, issue_id)
      resp = requests.get(url)
  
      if resp.status_code != 200:
          # GitHub API error, let's say True in this case to avoid problems.
          return True
  
      comments = resp.json()
      return any(c['user']['login'] == 'tldr-bot' for c in comments)
  
  
  @app.route('/', methods=['POST']) # old route, to be removed
  @app.route('/comment', methods=['POST'])
  @app.route('/comment/once', methods=['POST'])
  def comment():
      data = request.get_json()
  
      if data is None:
          return make_response('Invalid JSON or inappropriate Content-Type.', 400)
  
      pr_id        = data.get('pr_id')
      comment_body = data.get('body')
  
      # Check if request is valid.
      if pr_id is None or comment_body is None:
          return make_response('Missing required JSON fields', 400)
  
      # If needed, check if already commented.
      if request.path == '/comment/once' and check_already_commented(pr_id):
          return make_response('already commented', 200)
  
      # Post comment.
      resp = post_comment(pr_id, comment_body)
  
      if resp.status_code != 201:
          return make_response(resp.text, 500)
  
      return make_response('success', 200)
  
  
  @app.route('/status', methods=['GET'])
  def status():
      # Health check entpoint for monitoring purposes.
      return make_response('ok', 200)
  
  
  ################################################################################
  
  GITHUB_API_URL = 'https://api.github.com'
  BOT_TOKEN = os.getenv('BOT_TOKEN')
  REPO_SLUG = os.getenv('REPO_SLUG')
  
  if BOT_TOKEN is None or REPO_SLUG is None:
    print('Needed environment variables are not set.')
    sys.exit(1)
  
subject: Remove unneeded debugging print statement.