1.新建一個features包，在新建一個steps包

2.新建一個register.features檔案

#coding=utf-8
Feature:Register User
    As a developer
    This is my first bdd project
    Scenario:open register website
        When I open  the register website
        Then I expect that title is "註冊"

3.新建一個environment檔案

#coding=utf-8
from selenium import webdriver
 

def before_all(context):
    context.driver=webdriver.Chrome()
def after_all(context):
    context.driver.close()
4.新建一個register_user的python檔案

#coding=utf-8
from behave import *
use_step_matcher('re')

@when('I open  the register website')
def step_register(context):
    context.driver.get("http://www.5itest.cn/register")
 

@then('I expect that title is "([^"]*)"')
def step_register1(context,title_name):
    title=context.driver.title
    assert title_name in title

4.要在命令執行 behave