gistfile1.txt

def twitter_get(url):
    resp = twitter.get(url)

    if resp.status_code == 429:
        # twitter rate limit was hit
        print("Rate limit hit when calling %s" % (url))
        raise CustomException("Rate limit exceeded! You are using the API too often. Try again after 15 minutes or so.")

    return resp

def intersection(list_a, list_b):
    return [ e for e in list_a if e in list_b ]

@app.route('/twitter', methods=['GET', 'POST'])
def twitter_tools():
    screen_name = ""
    if not twitter.authorized:
        # return redirect(url_for("twitter.login"))
        return render_template('twitter_login.html')

    try: 
        resp = twitter_get("account/settings.json")

        assert resp.ok
        screen_name=resp.json()["screen_name"]

        if request.method == 'POST':
            # https://twitter.com/roytang/status/1087344612941824001
            message = ""
            un1 = request.form.get("un1")
            un2 = request.form.get("un2")
            items = []
            fc1 = 0
            fc2 = 0
            results = False
            if len(un1) == 0 or len(un2) == 0:
                message = "Please input two usernames"
            else:

                resp = twitter_get("users/show.json?screen_name="+un1)
                fc1 = resp.json()["friends_count"]
                if fc1 > CURSOR_LIMIT:
                    raise CustomException("%s has too many follows (%s) for this operation, sorry!" % (un1, fc1))

                follows1 = get_friends(un1)

                resp = twitter_get("users/show.json?screen_name="+un2)
                fc2 = resp.json()["followers_count"]
                if fc2 > CURSOR_LIMIT:
                    raise CustomException("%s has too many followers (%s) for this operation, sorry!" % (un2, fc2))

                followers2 = get_followers(un2)

                intersect = intersection(follows1, followers2)
                for i in intersect:
                    resp = twitter_get("users/show.json?user_id="+str(i))
                    userinfo = resp.json()
                    items.append(userinfo["screen_name"])
                results = True

            return render_template('twitter.html', screen_name=screen_name, message=message, un1=un1, un2=un2, items=items, fc1=fc1, fc2=fc2, results=results)

        return render_template('twitter.html', screen_name=screen_name)

    except CustomException as e:
        return render_template('twitter.html', screen_name=screen_name, message=str(e))


def get_cursor_list(base_url, json_elem):

    l = []
    next_cursor = -1
    while next_cursor != 0:
        url = base_url
        if next_cursor > 0:
            url = url + "&cursor=" + str(next_cursor)
        resp = twitter_get(url)
        l.extend(resp.json()[json_elem])
        next_cursor = resp.json()["next_cursor"]

    return l


def get_followers(screen_name):
    return get_cursor_list("followers/ids.json?screen_name="+screen_name, "ids")

def get_friends(screen_name):
    return get_cursor_list("friends/ids.json?screen_name="+screen_name, "ids")