1、#先定位到父節點，再從父節點找指定節點

例如:  注意不能直接用

driver.find_element_by_xpath('//*[@id="branch_inquiry"]').find_element_by_class_name('city-picker-span')

用法

# -*- coding: utf-8 -*-
from selenium import webdriver
from selenium.webdriver.common.by import By
from selenium.webdriver.common.keys import Keys
from selenium.webdriver.support.ui import Select
from selenium.common.exceptions import NoSuchElementException
from selenium.common.exceptions import NoAlertPresentException
import unittest, time, re

driver = webdriver.Chrome()
driver.get("http://intl.sit.sf-express.com:8980/")
from selenium.webdriver import ActionChains
import time
driver.find_element_by_xpath('/html/body/div[3]/div[2]/a[5]').click()
time.sleep(1)
service_coverage = driver.find_element_by_xpath('//*[@id="range_inquiry"]').find_element_by_class_name('city-picker-span')
print(service_coverage.text)
service_coverage.click()
 

driver.find_element_by_xpath("//input[@id='cityAddress1']/following-sibling::span").click()

3、由父節點定位子節點

# 1.串聯尋找
print driver.find_element_by_id('B').find_element_by_tag_name('div').text

# 2.xpath父子關係尋找
print driver.find_element_by_xpath("//div[@id='B']/div").text

# 3.css selector父子關係尋找
print driver.find_element_by_css_selector('div#B>div').text

# 4.css selector nth-child
print driver.find_element_by_css_selector('div#B div:nth-child(1)').text

# 5.css selector nth-of-type
print driver.find_element_by_css_selector('div#B div:nth-of-type(1)').text

# 6.xpath軸 child
print driver.find_element_by_xpath("//div[@id='B']/child::div").text
 

# 1.xpath: `.`代表當前節點; '..'代表父節點
print driver.find_element_by_xpath("//div[@id='C']/../..").text
# 2.xpath軸 parent
print driver.find_element_by_xpath("//div[@id='C']/parent::*/parent::div").text

# 1.xpath,通過父節點獲取其哥哥節點
print driver.find_element_by_xpath("//div[@id='D']/../div[1]").text
# 2.xpath軸 preceding-sibling
print driver.find_element_by_xpath("//div[@id='D']/preceding-sibling::div[1]").text
 

# 1.xpath，通過父節點獲取其弟弟節點
print driver.find_element_by_xpath("//div[@id='D']/../div[3]").text
# 2.xpath軸 following-sibling
print driver.find_element_by_xpath("//div[@id='D']/following-sibling::div[1]").text
# 3.xpath軸 following
print driver.find_element_by_xpath("//div[@id='D']/following::*").text
# 4.css selector +
print driver.find_element_by_css_selector('div#D + div').text
# 5.css selector ~
print driver.find_element_by_css_selector('div#D ~ div').text

第一種方法：通過絕對路徑做定位（相信大家不會使用這種方式）
By.xpath("html/body/div/form/input")
By.xpath("//input")
第三種方法：通過元素索引定位
By.xpath("//input[4]")
第四種方法：使用xpath屬性定位（結合第2、第3中方法可以使用）
By.xpath("//input[@id='kw1']")
By.xpath("//input[@type='name' and @name='kw1']")
第五種方法：使用部分屬性值匹配（最強大的方法）
By.xpath("//input[start-with(@id,'nice')
By.xpath("//input[ends-with(@id,'很漂亮')
By.xpath("//input[contains(@id,'那麼美')]")