def get_str_from_params(params: dict):
    """ Returns string from the parameters """
    result = list()
    keys = list(params.keys())
    length = len(keys)

    result.append("%s=%s" % (keys[0], params[keys[0]]))
    for i in range(1, length):
        result.append(":%s=%s" % (keys[i], params[keys[i]]))

    return ''.join(result)