1/如果已知接下來的操作會增加新的視窗，可以直接使用如下方法

def switch_to_cur_win(driver):
    try:
        all_win = driver.window_handle
        all_win_num = len(all_win)
        driver.switch_to.window(all_win[all_win_num-1])
    except Exception as e:
        print('切換視窗異常:',e)

2/如果在操作的過程中不知道是否會增加新的視窗，則可以改進一下

def switch_to_cur_win_ifchange(driver, exec_fun=None):
    pre_win_num 
 
= len(driver.window_handles)
    if exec_fun is not None:
        exec_fun()
    all_win = driver.window_handles
    cur_win_num = len(all_win)
    if cur_win_num != pre_win_num:
        driver.switch_to.window(all_win[cur_win_num - 1])

def get_element(driver, selector, is_immedite=None):
    check_loading_is_hide(driver)
    wait 
 
= WebDriverWait(driver, 10, 0.5)
    text = None
    # 支援選擇器中帶文字 比如：div>span[text]=病例 正常選擇器中是沒有這種寫法的
    if selector.find("[text]=") > -1:
        selector, text = selector.split("[text]=")
    if selector.startswith("/") or selector.find("following-sibling::")>-1:
        if is_immedite:
            elements 
 
= driver.find_elements_by_xpath(selector)
        else:
            elements = wait.until(EC.presence_of_all_elements_located((By.XPATH, selector)))
    else:
        if is_immedite:
            elements = driver.find_elements_by_css_selector(selector)
        else:
            elements = wait.until(EC.presence_of_all_elements_located((By.CSS_SELECTOR, selector)))
    if len(elements) > 0 and text is not None:
        for ele in elements:
            if ele.text == text:
                return ele
        return None
    return elements[0] if elements is not None and len(elements) > 0 else None

#呼叫該方法

switch_to_cur_win_ifchange(driver, lambda: get_element(driver, case.get("selector")).click())

3/也可以切換到指定的頁面

# 切換到指定視窗 change_num 負數表示前第幾個視窗，正數表示後第幾個視窗

def switch_to_win(driver, change_num):
    all_win = driver.window_handles
    cur_win = driver.current_window_handle
    index = all_win.index(cur_win)
    driver.switch_to.window(all_win[index+change_num])