问在python中利用Reddit API爬取数据出现错误？

import praw
import csv

client_id="03UcgbJEBrDsN-DBsuCU-w",		 # 您的客户 ID
client_secret="HDMkGK9ml2sf8NahSj74LRxTCPE_gA",	 # 您的客户秘密
user_agent="scraping"	 # 您的用户代理


# Reddit API 初始化
reddit = praw.Reddit(client_id=client_id, client_secret=client_secret, user_agent=user_agent)

# 关键词列表
keywords = ['hash']

#创建csv文件
with open('reddit_results.csv', 'w', encoding='utf-8', newline='') as csv_file:
    csv_writer = csv.writer(csv_file)
    csv_writer.writerow(['Author', 'Title', 'Content'])
# 爬取Reddit中的相关内容
for keyword in keywords:
    print(f"Results for keyword: {keyword}\n")
    # 使用搜索功能进行查询
    results = reddit.subreddit('all').search(keyword, sort='relevance', time_filter='all')

    # 输出相关内容的作者和标题
    for submission in results:
        author_id = submission.author.id if submission.author else 'N/A'
        title = submission.title
        content = submission.selftext if submission.is_self else 'Not a self-post'

        print(f"Author: {submission.author}")
        print(f"Title: {submission.title}")
        print(f"Content: {content}")
        print("\n---\n")
        # 写入CSV文件
        csv_writer.writerow([author_id, title, content])

E:\Anaconda2\envs\my_env2\python.exe F:/GitHub/爬虫/venv/第三章：数据解析/reddit.py
Results for keyword: hash

Traceback (most recent call last):
  File "F:\GitHub\爬虫\venv\第三章：数据解析\reddit.py", line 26, in <module>
    for submission in results:
  File "E:\Anaconda2\envs\my_env2\lib\site-packages\praw\models\listing\generator.py", line 63, in __next__
    self._next_batch()
  File "E:\Anaconda2\envs\my_env2\lib\site-packages\praw\models\listing\generator.py", line 89, in _next_batch
    self._listing = self._reddit.get(self.url, params=self.params)
  File "E:\Anaconda2\envs\my_env2\lib\site-packages\praw\util\deprecate_args.py", line 43, in wrapped
    return func(**dict(zip(_old_args, args)), **kwargs)
  File "E:\Anaconda2\envs\my_env2\lib\site-packages\praw\reddit.py", line 712, in get
    return self._objectify_request(method="GET", params=params, path=path)
  File "E:\Anaconda2\envs\my_env2\lib\site-packages\praw\reddit.py", line 517, in _objectify_request
    self.request(
  File "E:\Anaconda2\envs\my_env2\lib\site-packages\praw\util\deprecate_args.py", line 43, in wrapped
    return func(**dict(zip(_old_args, args)), **kwargs)
  File "E:\Anaconda2\envs\my_env2\lib\site-packages\praw\reddit.py", line 941, in request
    return self._core.request(
  File "E:\Anaconda2\envs\my_env2\lib\site-packages\prawcore\sessions.py", line 328, in request
    return self._request_with_retries(
  File "E:\Anaconda2\envs\my_env2\lib\site-packages\prawcore\sessions.py", line 254, in _request_with_retries
    return self._do_retry(
  File "E:\Anaconda2\envs\my_env2\lib\site-packages\prawcore\sessions.py", line 162, in _do_retry
    return self._request_with_retries(
  File "E:\Anaconda2\envs\my_env2\lib\site-packages\prawcore\sessions.py", line 234, in _request_with_retries
    response, saved_exception = self._make_request(
  File "E:\Anaconda2\envs\my_env2\lib\site-packages\prawcore\sessions.py", line 186, in _make_request
    response = self._rate_limiter.call(
  File "E:\Anaconda2\envs\my_env2\lib\site-packages\prawcore\rate_limit.py", line 46, in call
    kwargs["headers"] = set_header_callback()
  File "E:\Anaconda2\envs\my_env2\lib\site-packages\prawcore\sessions.py", line 282, in _set_header_callback
    self._authorizer.refresh()
  File "E:\Anaconda2\envs\my_env2\lib\site-packages\prawcore\auth.py", line 378, in refresh
    self._request_token(grant_type="client_credentials", **additional_kwargs)
  File "E:\Anaconda2\envs\my_env2\lib\site-packages\prawcore\auth.py", line 155, in _request_token
    response = self._authenticator._post(url=url, **data)
  File "E:\Anaconda2\envs\my_env2\lib\site-packages\prawcore\auth.py", line 59, in _post
    raise ResponseException(response)
prawcore.exceptions.ResponseException: received 401 HTTP response

Process finished with exit code 1