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"""Reddit Helpers"""
__docformat__ = "numpy"
import re
from typing import List
import praw
def find_tickers(submission: praw.models.reddit.submission.Submission) -> List[str]:
"""Extracts potential tickers from reddit submission.
Parameters
----------
submission : praw.models.reddit.submission.Submission
Reddit post to scan
Returns
-------
List[str]
List of potential tickers
"""
ls_text = [submission.selftext, submission.title]
submission.comments.replace_more(limit=0)
for comment in submission.comments.list():
ls_text.append(comment.body)
l_tickers_found = []
for s_text in ls_text:
for s_ticker in set(re.findall(r"([A-Z]{3,5} )", s_text)):
l_tickers_found.append(s_ticker.strip())
return l_tickers_found
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