Регулярное выражение работает на https://regex101.com/

Question

Я пытаюсь получить токен из текстового файла.Регулярное выражение хорошо работает на https://regex101.com/r/ADdV9T/2, но не работает, когда я запускаю код в редакторе VScode

def findToken():
    openFile = open("file.txt", 'r')
    if openFile.mode == 'r':
        pattern = "\b\w{6}$"
        content = openFile.read()
        find = re.findall(r"\b\w{6}$", content)
        print(find)

#(\b[0-9a-fA-F]{6}\b)
findToken()

file.txt:

This is a text file with a string and a phone number.
My phone number is +2347013048685 and my address is 2nd Floor Traditions Building.

Your task is to find a substring within this text document.
But I know you'll scam me, so I'm gonna make it a bit difficult to find.

Bridget's phone number is +2348050194095
Zamyla's phone number is +2348149203894
Andy's phone is +2349057820193

Dave's phone is 08030148503 and Anne's phone is 08050201048.

A bunch of people also have tokens that are alphanumeric in nature.

Indy's token is 293e39
Lola's token is 91a28b
Charles's token is af291c

Tokens are alphanumber but hexadecimal as you'll see.

Bade lives at 59 Badru Estate, Lagos. Sola lives at 4 Novella Street, Lagos.
Bayo lives at 3 Iyin Street, Ibadan.