Python Selenium: Finds h1 element but returns empty text string

As @ahmad-moussa mentioned, for me to the solution was:

import time

(...)

time.sleep(1)
# before 
<webelement>.text

The problem is that there are two h1 elements with totally the same outer HTML: the first is hidden, the second is not. You can check it with

print(len(driver.find_elements_by_xpath('//h1[@class="product-title "]')))

text property allow you to get text from only visible elements while textContent attribute also allow to get text of hidden one

Try to replace

new_name = driver.find_element_by_xpath(xp_name).text

with

new_name = driver.find_element_by_xpath(xp_name).get_attribute('textContent')

or simply handle the second (visible) header:

driver.find_elements_by_xpath('//h1[@class="product-title "]')[1].text