セレン4とクロームのドライバは、フルページのスクリーンショットを取る

# I am assuming we already have a driver object.

# We need the dimensions of the content
page_rect = driver.execute_cdp_cmd('Page.getLayoutMetrics', {})

# parameters needed for ful page screenshot
# note we are setting the width and height of the viewport to screenshot, same as the site's content size
screenshot_config = {'captureBeyondViewport': True,
                             'fromSurface': True,
                             'clip': {'width': page_rect['contentSize']['width'],
                                      'height': page_rect['contentSize']['height'],
                                      'x': 0,
                                      'y': 0,
                                      'scale': 1},
                             }
# Dictionary with 1 key: data
base_64_png = driver.execute_cdp_cmd('Page.captureScreenshot', screenshot_config)

# Write img to file
with open("imageToSave.png", "wb") as fh:
    fh.write(base64.urlsafe_b64decode(base_64_png['data'))