我正在尝试使用带有 Selenium 和 Behave 的单例模式进行项目,但它无法正常工作 - 对象总是在 @then 装饰器下第二次创建。我想我在 new 方法中犯了一些错误,但无法真正看到哪里。
class WebDriver:
singleton_instance = None
driver = None
def __init__(self):
self.driver = webdriver.Chrome("C:\webdriver\chromedriver.exe")
def __new__(cls):
if not hasattr(cls, 'instance'):
cls.singleton_instance = super(WebDriver, cls).__new__(cls)
return cls.singleton_instance
@given ("website '{url}'")
def website_opener(context,url):
driver = WebDriver()
print(driver.singleton_instance)
@then("push button with text '{text}'")
def button_pusher(context,text):
driver = WebDriver() #another object of WebDriver() is created
print(driver.singleton_instance)
WebDriverWait(driver,120).until(
EC.element_to_be_clickable((By.XPATH,'//*[contains(text(), "%s")]' % text))
)
context.browser.quit()
最佳答案
您不需要使用__new__
class WebDriver:
class __WebDriver:
def __init__(self):
self.driver = webdriver.Chrome(r'C:\webdriver\chromedriver.exe')
driver = None
def __init__(self):
if not self.driver:
WebDriver.driver = WebDriver.__WebDriver().driver
@given ("website '{url}'")
def website_opener(context,url):
driver = WebDriver().driver
driver.get('https://google.com')
关于python - Selenium 中的单例实现 [Python],我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/58604529/