PRAW: How can I continuously check for new reddit submissions (and perform action)

Question

Currently, the script I'm working on will look at the newest submission for a subreddit and return the flair from that post. But it will only do this once and ignore any new submissions while it is running.

How can I get this to continuously check in intervals and provide flairs for future incoming submissions?

Current code:

def subdata():

    for submission in subreddit.new(limit=1):
        flair = submission.link_flair_text

        return flair


subdata()

Answer 1

# ... (creation of subreddit object, logging into Reddit, ...)

for submission in subreddit.stream.submissions():
  flair = submission.link_flair_text
  # call a function here that processes your flair
  custom_method(flair)

def custom_method(flair):
  print(flair)

When you are returning in a for loop the loop will be cancelled. You however want to continuously retrieve new submissions. It is not possible to return it.

edit: fixed some mistakes thanks jarhill0