Why does my code return an error finding devices?

[New user]

I have some code to get my token
and this code to get my available players
def find_player(token):
url = "https://api.spotify.com/v1/me/player/devices"
headers = {
"Authorization": f"Bearer {token}"
}
response = requests.get(url, headers=headers)
print(response.content)
print(response.status_code)

[Ximzend]

How did you get the Bearer Authorization token?