将 Python Selenium 输出写入 Excel

我编写了一个脚本来从在线网站上抓取产品信息。目标是将这些信息写入 Excel 文件。由于我的Python知识有限，我只知道如何在Powershell中使用Out-file导出。但结果是每个产品的信息都打印在不同的行上。我希望每种产品都有一条生产线。

我想要的输出可以在图片中看到。我希望我的输出看起来像第二个版本，但我可以接受第一个版本。

这是我的代码：

from selenium import webdriver
from selenium.common.exceptions import TimeoutException
from selenium.webdriver.support.ui import WebDriverWait
from selenium.webdriver.support import expected_conditions as EC
from selenium.common.exceptions import NoSuchElementException    

url = "http://www.strem.com/"
cas = ['16940-92-4','29796-57-4','13569-57-8','15635-87-7']

for i in cas:
    driver = webdriver.Firefox()
    driver.get(url)

    driver.find_element_by_id("selectbox_input").click()
    driver.find_element_by_id("selectbox_input_cas").click()

    inputElement = driver.find_element_by_name("keyword")
    inputElement.send_keys(i)
    inputElement.submit()

    # Check if a particular element exists; returns True/False          
    def check_exists_by_xpath(xpath):
        try:
            driver.find_element_by_xpath(xpath)
        except NoSuchElementException:
            return False
        return True

    xpath1 = ".//div[@class = 'error']" # element containing error message
    xpath2 = ".//table[@class = 'product_list tiles']" # element containing table to select product from
    #xpath3 = ".//div[@class = 'catalog_number']" # when selection is needed, returns the first catalog number

    if check_exists_by_xpath(xpath1):
        print "cas# %s is not found on Strem." %i
        driver.quit() 
    else:
        if check_exists_by_xpath(xpath2):
            catNum = driver.find_element_by_xpath(".//div[@class = 'catalog_number']")
            catNum.click()

            country = driver.find_element_by_name("country")
            for option in country.find_elements_by_tag_name('option'):
                if option.text == "USA":
                    option.click()
            country.submit()

            name = driver.find_element_by_id("header_description").text
            prodNum = driver.find_element_by_class_name("catalog_number").text
            print(i)
            print(name.encode("utf-8"))
            print(prodNum)

            skus_by_xpath = WebDriverWait(driver, 10).until(
                lambda driver : driver.find_elements_by_xpath(".//td[@class='size']")
            )

            for output in skus_by_xpath:
                print(output.text)

            prices_by_xpath = WebDriverWait(driver, 10).until(
                lambda driver : driver.find_elements_by_xpath(".//td[@class='price']")
            )

            for result in prices_by_xpath:
                print(result.text[3:]) #To remove last three characters, use :-3

            driver.quit()
        else:
            country = driver.find_element_by_name("country")
            for option in country.find_elements_by_tag_name('option'):
                if option.text == "USA":
                    option.click()
            country.submit()

            name = driver.find_element_by_id("header_description").text
            prodNum = driver.find_element_by_class_name("catalog_number").text
            print(i)
            print(name.encode("utf-8"))
            print(prodNum)

            skus_by_xpath = WebDriverWait(driver, 10).until(
                lambda driver : driver.find_elements_by_xpath(".//td[@class='size']")
            )

            for output in skus_by_xpath:
                print(output.text)

            prices_by_xpath = WebDriverWait(driver, 10).until(
                lambda driver : driver.find_elements_by_xpath(".//td[@class='price']")
            )

            for result in prices_by_xpath:
                print(result.text[3:]) #To remove last three characters, use :-3

            driver.quit()

https://pythonhosted.org/openpyxl/tutorial.html https://pythonhosted.org/openpyxl/tutorial.html

这是一个Python库的教程，允许对Python进行操作 还有其他库，但我喜欢使用这个。

从 openpyxl 导入工作簿 wb = 工作簿()

然后使用给出的方法写入数据 进而

wb.保存（文件名）

真的很容易上手。

这是一个使用 xlwt 和 xlrd 的 pdf 教程，但我并不经常使用这些模块。http://www.simplistix.co.uk/presentations/python-excel.pdf http://www.simplistix.co.uk/presentations/python-excel.pdf