Python Selenium调用.text方法无法获取文本问题求助

我需要从Mailinator邮箱的邮件中提取验证码，但使用Python Selenium的.text方法时，始终无法获取并存储任何文本。此外只能使用find_elements(By.XPATH, "示例")这类新语法，无法使用find_elements_by_xpath("示例")等旧语法。我使用的是最新版本的Python，开发环境为Visual Studio Code。

我尝试过通过正则匹配循环提取符合规则的元素，但结果相同。目前没有报错信息，仅输出换行符，且该问题并非仅出现在Mailinator场景中，测试谷歌首页等多个网站均存在相同问题。以下是移除凭证后的测试代码：

from selenium import webdriver
from selenium.webdriver.common.by import By
import time
from selenium.webdriver.support.ui import WebDriverWait
from selenium.webdriver.support import expected_conditions as EC
# from faker import Faker
# import re

options = webdriver.ChromeOptions()
options.add_experimental_option('excludeSwitches', ['enable-logging'])
driver = webdriver.Chrome(options=options)
wait = WebDriverWait(driver, 20)
username = '*'
driver.get("https://www.mailinator.com/v4/login.jsp")
wait.until(EC.element_to_be_clickable((By.XPATH, "/html/body/main/div/div/div/section/form/div[2]/input"))).send_keys(
    "*")
wait.until(EC.element_to_be_clickable((By.XPATH, "/html/body/main/div/div/div/section/form/div[3]/input"))).send_keys(
    "*")
wait.until(EC.element_to_be_clickable((By.XPATH, "/html/body/main/div/div/div/section/form/div[4]/a[1]"))).click()
wait.until(EC.element_to_be_clickable((By.XPATH, "//*[contains(@id,'row_"+ username +"')]/td[2]"))).click()
iframe = driver.find_element('tag name', 'iframe')
print('line21 executed')
driver.switch_to.frame(iframe)
print('line23 executed')
email_text = driver.find_element('tag name', 'body').text
print('line25 executed')
print(email_text)
print('line27 executed')

我需要获取文本以提取验证码，用于项目BDD测试中的注册流程，但该问题已困扰我数小时，无法解决。

编辑1 #

根据建议更新代码后，输出如下：

from selenium import webdriver
from selenium.webdriver.common.by import By
import time
from selenium.webdriver.support.ui import WebDriverWait
from selenium.webdriver.support import expected_conditions as EC
# from faker import Faker
# import re

options = webdriver.ChromeOptions()
options.add_experimental_option('excludeSwitches', ['enable-logging'])
driver = webdriver.Chrome(options=options)
wait = WebDriverWait(driver, 20)
username = '*'
driver.get("https://www.mailinator.com/v4/login.jsp")
wait.until(EC.element_to_be_clickable((By.XPATH, "/html/body/main/div/div/div/section/form/div[2]/input"))).send_keys(
    "*")
wait.until(EC.element_to_be_clickable((By.XPATH, "/html/body/main/div/div/div/section/form/div[3]/input"))).send_keys(
    "*")
wait.until(EC.element_to_be_clickable((By.XPATH, "/html/body/main/div/div/div/section/form/div[4]/a[1]"))).click()
wait.until(EC.element_to_be_clickable((By.XPATH, "//*[contains(@id,'row_"+ username +"')]/td[2]"))).click()
iframe = driver.find_element(By.ID, 'html_msg_body')
print('line21 executed')
driver.switch_to.frame(iframe)
print('line23 executed')
email_text = wait.until(EC.visibility_of_element_located(('tag name', 'body'))).text
print('line25 executed')
print(email_text)
print('line27 executed')

输出内容：

line21 executed
line23 executed
line25 executed

line27 executed

编辑2 #

我改用公开的Mailinator邮箱测试，代码如下：

from selenium import webdriver
from selenium.webdriver.common.by import By
import time
from selenium.webdriver.support.ui import WebDriverWait
from selenium.webdriver.support import expected_conditions as EC
# from faker import Faker
# import re

options = webdriver.ChromeOptions()
options.add_experimental_option('excludeSwitches', ['enable-logging'])
driver = webdriver.Chrome(options=options)
wait = WebDriverWait(driver, 20)
driver.get("https://www.mailinator.com/v4/public/inboxes.jsp?to=testingfor042223")
wait.until(EC.element_to_be_clickable((By.XPATH, '//*[@id="row_testingfor042223-1682214679-12524595"]/td[2]'))).click()
# wait.until(EC.element_to_be_clickable((By.XPATH, "/html/body/div[1]/main/div[2]/div[3]/div/div[4]/div/div/table/tbody/tr/td[2]"))).click()
iframe = driver.find_element(By.ID, 'html_msg_body')
print('line21 executed')
driver.switch_to.frame(iframe)
print('line23 executed')
body = wait.until(EC.visibility_of_element_located((By.CSS_SELECTOR, "body")))
print('line25 executed')
print(body.text)
print('line27 executed')

内容的提问来源于stack exchange，提问作者Rush Neighbors