Small python console script to check whether your password has been leaked to https://haveibeenpwned.com/ . See https://haveibeenpwned.com/API/v2#SearchingPwnedPasswordsByRange on why this is safe to do and you aren't leaking your password by checking.

hibp.py

#!/usr/bin/env python3
from hashlib import sha1
from getpass import getpass
from requests import get

def is_pwd_pwned(pwd):
    """ Returns tuple of (pwned:boolean, occurances) for given password"""
    h = sha1(pwd.encode('utf-8')).hexdigest().upper().encode('ascii')
    prefix_h = h[:5]
    suffix_h = h[5:]

    res = get(b"https://api.pwnedpasswords.com/range/" + prefix_h)
    pwned_h_suffixes = dict([e.split(b':') for e in res.iter_lines() if len(e) > 0])
    if suffix_h in pwned_h_suffixes:
        return (True, int(pwned_h_suffixes[suffix_h]))
    return (False, 0)

if __name__ == "__main__":
    pwd = getpass("Enter password to check: ")
    pwned, count = is_pwd_pwned(pwd)
    if pwned:
        print(f"Potentially pwned. Password {pwd} contained {count} times")
    else:
        print("Not pwned. Password not contained in database.")