使用 xlswriter 将文件命名为当前日期和时间

Question

我正在尝试使用 xlsxwriter 创建一个 excel 文件并将文件命名为当前日期和时间。对于上下文，我想将其添加到网络爬虫中，该爬虫设置为每天中午运行并将其导出到 Excel。我希望文件名与抓取时间相对应。

我尝试使用 datetime 函数没有成功：

import xlsxwriter
import datetime

# Create a workbook and add a worksheet.

todays_date = "'" + datetime.datetime.now().strftime("%Y-%m-%d %H:%M") + '.xlsx' + "'"
workbook = xlsxwriter.Workbook(todays_date)
worksheet = workbook.add_worksheet()

# Some data we want to write to the worksheet.
expenses = (
    ['Rent', 1000],
    ['Gas',   100],
    ['Food',  300],
    ['Gym',    50],
)

# Start from the first cell. Rows and columns are zero indexed.
row = 0
col = 0

# Iterate over the data and write it out row by row.
for item, cost in (expenses):
    worksheet.write(row, col,     item)
    worksheet.write(row, col + 1, cost)
    row += 1

# Write a total using a formula.
worksheet.write(row, 0, 'Total')
worksheet.write(row, 1, '=SUM(B1:B4)')

workbook.close()

有谁知道为什么这不起作用或其他替代方法？

@Sandeep Hukku - 编辑代码如下：

import xlsxwriter
import datetime

# Create a workbook and add a worksheet.

# todays_date = "'" + datetime.datetime.now().strftime("%Y-%m-%d %H:%M") + '.xlsx' + "'"
todays_date = str(datetime.datetime.now().strftime("%Y-%m-%d %H:%M") )+ '.xlsx'
workbook = xlsxwriter.Workbook(todays_date)
worksheet = workbook.add_worksheet()

# Some data we want to write to the worksheet.
expenses = (
    ['Rent', 1000],
    ['Gas',   100],
    ['Food',  300],
    ['Gym',    50],
)

# Start from the first cell. Rows and columns are zero indexed.
row = 0
col = 0

# Iterate over the data and write it out row by row.
for item, cost in (expenses):
    worksheet.write(row, col,     item)
    worksheet.write(row, col + 1, cost)
    row += 1

# Write a total using a formula.
worksheet.write(row, 0, 'Total')
worksheet.write(row, 1, '=SUM(B1:B4)')

workbook.close()

@Snehal Parmar - 第二次更新：

导入 urllib 导入 urllib.request 从 bs4 导入 BeautifulSoup 导入日期时间 导入 xlsxwriter

# Web scraping
def make_soup(url):
    the_page = urllib.request.urlopen(url)
    soup_data = BeautifulSoup(the_page, "html.parser")
    return soup_data


soup = make_soup('http://www.url.co.uk')


def getNames():
    for record in soup.findAll('tr'):
        for data in record.findAll('td'):
            for td_in_data in data.findAll('td', {"class": "propname"}):
                print(td_in_data.text)


def getRooms():
    for record in soup.findAll('tr'):
        for data in record.findAll('td'):
            for td_in_data in data.findAll('span', {"class": "beds"}):
                print(td_in_data.text)


def getRents():
    for record in soup.findAll('tr'):
        for data in record.findAll('td'):
            for td_in_data in data.findAll('td', {"class": "rentprice"}):
                print(td_in_data.text)


''' To do: get the scraped data to an Excel doc.'''

# Create a workbook and add a worksheet.


todays_date = str(datetime.datetime.now().strftime("%Y-%m-%d %H:%M") )+ '.xlsx'
todays_date = todays_date.replace(" ", "_").replace(":", "_")

workbook = xlsxwriter.Workbook(todays_date)
worksheet = workbook.add_worksheet()

# Data to Excel.
Excel_dump = (
    ['Name', getNames()],
    ['Rent',   getRents()],
    ['Rooms',  getRooms()]
)

# Start from the first cell. Rows and columns are zero indexed.
row = 0
col = 0


# Iterate over the data and write it out row by row.
for item, cost in Excel_dump:
    worksheet.write()
    worksheet.write(col, row,     item)
    worksheet.write(col, row + 1)
    row += 1

Answer 1

我不确定，但如果您在命名文件后关闭文件，然后再次以附加模式打开，然后将数据添加到文件中，可能会完成这项工作。有时创建文件是惰性操作，所以这里发生的情况是，直到没有任何内容写入文件，它才不是创建文件，操作系统也起着重要作用。请让我知道，因为它的网络爬虫代码我无法在我的机器上模拟。

遇到了问题： 问题在于文件名中的时间部分， 添加以下内容：

todays_date = todays_date.replace(" ", "_").replace(":", "_")

或

todays_date = str(datetime.datetime.now().strftime("%Y-%m-%d_%H_%M") )+ '.xlsx'

我希望这能解决问题。

Answer 2

你只需要写 todays_date = datetime.datetime.now().strftime("%Y-%m-%d %H:%M") + '.xlsx' 而不是 todays_date = "'" + datetime.datetime.now().strftime("%Y-%m-%d %H:%M") + '.xlsx' + "'"