def group_iban(string):
    string = ''.join(string.split())
    return ''.join(e if (i+1) % 4 else e+" " for (i,e) in enumerate(string)).strip()
Get request token secret.
dataset/ETHPy150Open kapsiry/sikteeri/membership/utils.py/group_iban--crossover with--dataset/ETHPy150Open lepture/flask-oauthlib/flask_oauthlib/provider/oauth1.py/OAuth1RequestValidator.get_request_token_secret