Python3でseleniumの簡単な操作。

hello_selenium.py

#!/usr/bin/env python
"""
seleniumをPython3で使う。
Pythonのseleniumの3.6.0では、FirefoxでもWebDriverが必要だった。昔は不要だった。
そのため、Chromeで試した。
--
chromeDriver - WebDriver for Chrome
https://sites.google.com/a/chromium.org/chromedriver/downloads

--
selenium          3.6.0
"""

from selenium import webdriver
import os

from selenium.common.exceptions import NoSuchElementException

from selenium.webdriver.common.keys import Keys

CHROME_DRIVER_PATH = 'C:\dev\chromedriver_win32\chromedriver.exe'


def main():
    if not os.path.exists(CHROME_DRIVER_PATH):
        print('not found web driver: %s' % CHROME_DRIVER_PATH)
        return

    driver = webdriver.Chrome(CHROME_DRIVER_PATH)
    driver.get('http://inventwithpython.com')
    try:
        el = driver.find_element_by_class_name('bookcover')
        print('Found <%s> element with that class name! ' % el.tag_name)
    except NoSuchElementException as e:
        print(e)
        print('Was not able to find an element with that name.')

    # ページをクリック
    el_link = driver.find_element_by_link_text('Read It Online')
    print(type(el_link))
    el_link.click()

    # キー操作
    el_html = driver.find_element_by_tag_name('html')
    for i in range(5):
        el_html.send_keys(Keys.PAGE_DOWN)

    driver.save_screenshot('hello_selenium_screen_shot.png')


if __name__ == '__main__':
    main()