三种判断元素存在的方法及其使用

这个可以说是被问烂的题了&＃xff0c;判断元素存在方法有三种&＃xff1a;

方法一&＃xff0c;用try...except...

~~~

def is_element_exsist(driver, locator):

&＃39;&＃39;&＃39;

判断元素是否存在,存在返回True,不存返回False

:param locator: locator为元组类型&＃xff0c;如("id", "yoyo")

:return: bool值&＃xff0c;True or False

&＃39;&＃39;&＃39;

try:

driver.find_element(*locator)

return True

except Exception as msg:

print("元素%s找不到&＃xff1a;%s" % (locator, msg))

return False

if __name__ &＃61;&＃61; &＃39;__main__&＃39;:

loc1 &＃61; ("id", "yoyo") # 元素1

print(is_element_exsist(driver, loc1))

~~~

方法二&＃xff1a;用elements定义一组元素方法

~~~

def is_element_exsist1(driver, locator):

&＃39;&＃39;&＃39;

判断元素是否存在,存在返回True,不存返回False

:param locator: locator为元组类型&＃xff0c;如("id", "yoyo")

:return: bool值&＃xff0c;True or False

&＃39;&＃39;&＃39;

eles &＃61; driver.find_elements(*locator)

if len(eles) <1:

return False

else:

return True

if __name__ &＃61;&＃61; &＃39;__main__&＃39;:

loc1 &＃61; ("id", "yoyo") # 元素1

print(is_element_exsist1(driver, loc1))

~~~

(强烈推荐&＃xff01;)方法三&＃xff1a;结合WebDriverWait和expected\_conditions判断

~~~

from selenium import webdriver

from selenium.webdriver.support import expected_conditions as EC

from selenium.webdriver.support.ui import WebDriverWait

def is_element_exsist2(driver, locator):

&＃39;&＃39;&＃39;

结合WebDriverWait和expected_conditions判断元素是否存在,

每间隔1秒判断一次&＃xff0c;30s超时&＃xff0c;存在返回True,不存返回False

:param locator: locator为元组类型&＃xff0c;如("id", "yoyo")

:return: bool值&＃xff0c;True or False

&＃39;&＃39;&＃39;

try:

WebDriverWait(driver, 30, 1).until(EC.presence_of_element_located(locator))

return True

except:

return False

if __name__ &＃61;&＃61; &＃39;__main__&＃39;:

loc1 &＃61; ("id", "yoyo") # 元素1

print(is_element_exsist2(driver, loc1))

~~~