Как заставить работать переключение iframe в python/selenium?

Элемент не находится внутри какого-либо iframe. Попробуйте использовать webdriverwait и селектор css. Здесь я пробовал с хромом и отлично работает. Печатая мне текст 127 Google reviews, это то, что вам нужно.

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

driver=webdriver.Chrome()
driver.get("https://www.google.com/search?rlz=1C1GCEU_en__835__835&ei=gfW0XKjNFeXjkgW8g6PYDA&q=huawei%20stores%20italy&oq=huawei+stores+italy&gs_l=psy-ab.3..0i22i30l3.4596.6067..6522...1.0..0.99.530.7......0....1..gws-wiz.......0i71j0i20i263j0i67j0j33i160.QYVpoia0BL4&npsic=0&rflfq=1&rlha=0&rllag=45499827,9211657,4837&tbm=lcl&rldimm=17275164572016510107&lqi=ChNodWF3ZWkgc3RvcmVzIGl0YWx5IgOIAQFaDwoNaHVhd2VpIHN0b3Jlcw&ved=2ahUKEwiKrMm8g9PhAhXQ4KQKHY9KDc8QvS4wAXoECAoQHQ&rldoc=1&tbs=lrf:!2m1!1e3!2m1!1e16!3sIAE,lf:1,lf_ui:4#rlfi=hd:;si:17275164572016510107,l,ChNodWF3ZWkgc3RvcmVzIGl0YWx5IgOIAQFaDwoNaHVhd2VpIHN0b3Jlcw;mv:!1m2!1d45.5258666!2d9.274078399999999!2m2!1d45.443338999999995!2d9.1152195;tbs:lrf:!2m1!1e3!2m1!1e16!3sIAE,lf:1,lf_ui:4")
element=WebDriverWait(driver,20).until(expected_conditions.element_to_be_clickable((By.CSS_SELECTOR,'span.fl span a span')))
print(element.text)

elements=WebDriverWait(driver,20).until(expected_conditions.presence_of_all_elements_located((By.CSS_SELECTOR,'div.Jtu6Td span')))

for ele in elements:
    print(ele.text)

Будет напечатан первый отпечаток

127 Google reviews

Второй цикл напечатает 3 комментария обзора, чтобы увидеть больше комментариев, на которые вы должны нажать More Google review. Я думаю, что в этой части вы сделаете это.

Very good experience, personal are super professional and kind. I became now huawei client :)
The team is  really kind and extremely prepared
Good store everything you want from Huawei.

ОТРЕДАКТИРОВАНО:

from selenium.webdriver.common.by import By
from selenium.webdriver.support.ui import WebDriverWait
from selenium.webdriver.support import expected_conditions
from selenium import webdriver
from selenium.common.exceptions import NoSuchElementException


driver=webdriver.Chrome()
driver.get("https://www.google.com/search?rlz=1C1GCEU_en__835__835&ei=gfW0XKjNFeXjkgW8g6PYDA&q=huawei%20stores%20italy&oq=huawei+stores+italy&gs_l=psy-ab.3..0i22i30l3.4596.6067..6522...1.0..0.99.530.7......0....1..gws-wiz.......0i71j0i20i263j0i67j0j33i160.QYVpoia0BL4&npsic=0&rflfq=1&rlha=0&rllag=45499827,9211657,4837&tbm=lcl&rldimm=17275164572016510107&lqi=ChNodWF3ZWkgc3RvcmVzIGl0YWx5IgOIAQFaDwoNaHVhd2VpIHN0b3Jlcw&ved=2ahUKEwiKrMm8g9PhAhXQ4KQKHY9KDc8QvS4wAXoECAoQHQ&rldoc=1&tbs=lrf:!2m1!1e3!2m1!1e16!3sIAE,lf:1,lf_ui:4#rlfi=hd:;si:17275164572016510107,l,ChNodWF3ZWkgc3RvcmVzIGl0YWx5IgOIAQFaDwoNaHVhd2VpIHN0b3Jlcw;mv:!1m2!1d45.5258666!2d9.274078399999999!2m2!1d45.443338999999995!2d9.1152195;tbs:lrf:!2m1!1e3!2m1!1e16!3sIAE,lf:1,lf_ui:4")
element=WebDriverWait(driver,20).until(expected_conditions.element_to_be_clickable((By.CSS_SELECTOR,'span.fl span a span')))
print(element.text)
no_of_review=int(element.text.split()[0])
print(no_of_review)

elemore=WebDriverWait(driver,20).until(expected_conditions.element_to_be_clickable((By.XPATH,'//span[text() = "More Google reviews"]')))
driver.execute_script("arguments[0].click();",elemore)

all_reviews = WebDriverWait(driver, 3).until(expected_conditions.presence_of_all_elements_located((By.CSS_SELECTOR, 'div.gws-localreviews__google-review')))

while len(all_reviews) < no_of_review:
    driver.execute_script('arguments[0].scrollIntoView(true);', all_reviews[-1])
    WebDriverWait(driver, 1).until_not(expected_conditions.presence_of_element_located((By.CSS_SELECTOR, 'div[class$ = "activityIndicator"]')))
    all_reviews = driver.find_elements_by_css_selector('div.gws-localreviews__google-review')

reviews = []
for review in all_reviews:
    try:
         full_text_element = review.find_element_by_css_selector('span.review-full-text')
         reviews.append(full_text_element)
    except NoSuchElementException:
        full_text_element = review.find_element_by_css_selector('span[class^ = "r-"]')
        reviews.append(full_text_element.get_attribute('textContent'))

print(reviews)