Python – Making a Reddit bot with PRAW

03 Jul, 2020
Reddit is a network of communities based on people’s interests. Each of these communities is called a subreddit. Users can subscribe to multiple subreddits to post, comment and interact with them.A Reddit bot is something that automatically responds to a user’s post or automatically posts things at certain intervals. This could depend on what content the users post. It can be triggered by certain key phrases and also depends on various subreddits regarding their content.In order to implement a Reddit bot, we will use the Python Reddit API Wrapper (PRAW). It allows us to login to the Reddit API to directly interact with the backend of the website. More information about this library can be found here – PRAW – Python Reddit API Wrapper.
Our bot will tell the similar words for a given word. We will use the enchant module’s suggest() method to find the similar words.
Algorithm :
Import the modules praw and enchant.Create an authorized Reddit instance with valid parameters.Choose the subreddit where the bot is to be live on.Choose a word that will trigger the bot in that subreddit.Inspect every comment in the subreddit for the trigger phrase.On finding the trigger phrase, extract the word from the comment and find its similar words using the enchant module.Reply to the comment with the similar words.
Import the modules praw and enchant.
Create an authorized Reddit instance with valid parameters.
Choose the subreddit where the bot is to be live on.
Choose a word that will trigger the bot in that subreddit.
Inspect every comment in the subreddit for the trigger phrase.
On finding the trigger phrase, extract the word from the comment and find its similar words using the enchant module.
Reply to the comment with the similar words.
# import the modulesimport prawimport enchant  # initialize with appropriate valuesclient_id = ""client_secret = ""username = ""password = ""user_agent = ""  # creating an authorized reddit instancereddit = praw.Reddit(client_id = client_id,                      client_secret = client_secret,                      username = username,                      password = password,                     user_agent = user_agent)   # the subreddit where the bot is to be live ontarget_sub = "GRE"subreddit = reddit.subreddit(target_sub)  # phrase to trigger the bottrigger_phrase = "! GfGBot"  # enchant dictionaryd = enchant.Dict("en_US")  # check every comment in the subredditfor comment in subreddit.stream.comments():      # check the trigger_phrase in each comment    if trigger_phrase in comment.body:          # extract the word from the comment        word = comment.body.replace(trigger_phrase, "")          # initialize the reply text        reply_text = ""                  # find the similar words        similar_words = d.suggest(word)        for similar in similar_words:            reply_text += similar + " "          # comment the similar words        comment.reply(reply_text)
Triggering the bot :
The bot replying with the similar words :
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