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Authenticate Users on Other Criteria

Suppose we wanted to do something silly like restrict access to a page to users with Github handles that were between 5 and 7 letters.

Here is the relevant method that serves up index.html if the user's Github handle is 5-7 letters long:

def index():
    if not github.authorized:
        return redirect(url_for("github.login"))

    resp = github.get("/user")

    if resp.ok:
        username = resp.json()['login']
        if len(username)>=5 and len(username)<=7:
            return send_from_directory(STATIC_PATH, 'index.html')

    return contents403