如何使用 selenium 提取 class 值并保存在 csv 中？

Question

How Can I extract the value using selenium and python, My end goal is to store this value in a csv.

What I have tried:

#element=  driver.find_element_by_xpath("//*[@class='rt-tr-group']")
elements = driver.find_elements_by_class_name("product-form__price")
for value in elements:
    print(value.text)

But this returns an empty list?

HTML

Answer 1

Looks like you are missing a wait / delay.
Try this

wait.until(EC.visibility_of_element_located((By.CSS_SELECTOR, ".product-form__price")))
time.sleep(0.5)
elements = driver.find_elements_by_class_name("product-form__price")
for value in elements:
    print(value.text)

You will need these imports:

from selenium.webdriver.common.by import By
from selenium.webdriver.support.ui import WebDriverWait
from selenium.webdriver.support import expected_conditions as EC

And to initialize the wait object with

wait = WebDriverWait(driver, 20)

Answer 2

To print the innertexts eg $53.37 you need to induce WebDriverWait for the visibility_of_all_elements_located() and you can use either of the following Locator Strategies :

• Using CLASS_NAME and get_attribute("innerHTML") :

   print([my_elem.get_attribute("innerHTML") for my_elem in WebDriverWait(driver, 20).until(EC.visibility_of_all_elements_located((By.CLASS_NAME, "product-form__price")))])

• Using CSS_SELECTOR and get_attribute("textContent") :

   print([my_elem.get_attribute("textContent") for my_elem in WebDriverWait(driver, 20).until(EC.visibility_of_all_elements_located((By.CSS_SELECTOR, "span.product-form__price")))])

• Using XPATH and text attribute:

   print([my_elem.text for my_elem in WebDriverWait(driver, 20).until(EC.visibility_of_all_elements_located((By.XPATH, "//span[@class='product-form__price']")))])

• Note : You have to add the following imports:

   from selenium.webdriver.support.ui import WebDriverWait from selenium.webdriver.common.by import By from selenium.webdriver.support import expected_conditions as EC

You can find a relevant discussion in How to retrieve the text of a WebElement using Selenium - Python

---

References

Link to useful documentation:

• get_attribute() method Gets the given attribute or property of the element.
• text attribute returns The text of the element.
• Difference between text and innerHTML using Selenium