'Select a current user account'

def select_student(self, user_id):

    for newuser_id in range(len(self.student_list), user_id):
        username = 'user_{i}'.format(i=newuser_id)
        email = 'user_{i}@example.edx.org'.format(i=newuser_id)
        password = '12345'
        self._enroll_user(username, email, password)
        self.student_list.append({'email': email, 'password': password})
    email = self.student_list[user_id]['email']
    password = self.student_list[user_id]['password']
    self.login(email, password)
