Python 3.x 蟒蛇（靓汤）归来；无”；在爬网时查找现有html

我只是想得到网站搜索栏的html。我已经编写了一个代码，并在“”、“”和其他许多代码上进行了尝试，效果很好。但它并没有起作用

它返回none，而应该返回：

input type="search" id="q" name="q" placeholder="Search in Daraz" class="search-box__input--O34g" tabindex="1" value="" data-spm-anchor-id="a2a0e.home.search.i0.35e34937eWCmbI" 我也试过这样做：

    bsObj=BeautifulSoup(requests.get("https://www.daraz.com.pk").content, 
    "html.parser")

    nameList = bsObj.find("input", {"type": "search"})
    print(nameList)

通过这种方式使用硒：

    driver = webdriver.Firefox()
    driver.get("https://www.daraz.com.pk")

    time.sleep(2)
    content = driver.page_source.encode('utf-8').strip()
    soup = BeautifulSoup(content,"html.parser")
    time.sleep(2)
    officials = soup.find("input", {"type":"search"})
    print(str(officials))

但失败了

    bsObj=BeautifulSoup(requests.get("https://www.daraz.com.pk").content, 
    "html.parser")

    nameList = bsObj.find("input", {"type": "search"})
    print(nameList)

    driver = webdriver.Firefox()
    driver.get("https://www.daraz.com.pk")

    time.sleep(2)
    content = driver.page_source.encode('utf-8').strip()
    soup = BeautifulSoup(content,"html.parser")
    time.sleep(2)
    officials = soup.find("input", {"type":"search"})
    print(str(officials))