python - 如何在 xlsxwriter 中将列设置为 DATE 格式

Question

我正在做一个项目，我正在写一个 xlsx 电子表格，需要为“日期”设置一列的格式。我让程序运行，除列格式外，其他所有格式仍设置为“常规”。

用不同的代码以不同的方式尝试这个，看看是否有人回答。:

for row in cur.execute('''SELECT `Mapline`,`Plant`,`Date`,`Action` from AEReport'''):
    lengthOfHeadings = len(row)
    output = '%s-%s.xlsx' % ("AEReport",now.strftime("%m%d%Y-%H%M"))
    workbook = xlsxwriter.Workbook(output, {'strings_to_numbers':True})
    worksheet = workbook.add_worksheet()

    format=workbook.add_format({'font_size':'8','border':True})
    format2=workbook.add_format({'font_size':'8','border':True,'num_format':'mm/dd/yy hh:mm'})
    count = 0
    for name in range(0,lengthOfHeadings):
        if name==row[2]:
            name=int(name)
            worksheet.write(counter, count, row[name],format2)
    else:
        worksheet.write(counter, count, row[name],format)
    count += 1
counter += 1

蛇身

Answer 1

要使日期时间格式正常工作，您必须将日期值转换为 excel serial date value .

这是一个展示它如何工作的例子:

import pandas as pd
data = pd.DataFrame({'test_date':pd.date_range('1/1/2011', periods=12, freq='M') })
writer = pd.ExcelWriter('test.xlsx', engine='xlsxwriter')

data.test_date = data.test_date - pd.datetime(1899, 12, 31)

pd.core.format.header_style = None    
data.to_excel(writer, sheet_name='test', index=False)

workbook  = writer.book
worksheet = writer.sheets['test']

formatdict = {'num_format':'mm/dd/yyyy'}
fmt = workbook.add_format(formatdict)

worksheet.set_column('A:A', None, fmt)

writer.save()

输出结果如下: