pandas xlsxwriter，格式头

问题描述

我正在使用 xlsxwriter 将 pandas DataFrame 保存为 to_excel.除了更改标题的字体外，我已经设法格式化所有数据(设置列宽、字体大小等)，但我找不到这样做的方法.这是我的例子:

将 pandas 导入为 pd数据 = pd.DataFrame({'test_data': [1,2,3,4,5]})writer = pd.ExcelWriter('test.xlsx', engine='xlsxwriter')data.to_excel(writer, sheet_name='test', index=False)工作簿 = writer.book工作表 = writer.sheets['test']font_fmt = workbook.add_format({'font_name': 'Arial', 'font_size': 10})header_fmt = workbook.add_format({'font_name': 'Arial', 'font_size': 10, 'bold': True})worksheet.set_column('A:A', None, font_fmt)worksheet.set_row(0，无，header_fmt)writer.save()

尝试设置标题格式的倒数第二行没有任何作用.

解决方案

我认为你需要先重置默认标题样式，然后你可以更改它:

pd.core.format.header_style = 无

大家一起:

将 pandas 导入为 pd数据 = pd.DataFrame({'test_data': [1,2,3,4,5]})writer = pd.ExcelWriter('test.xlsx', engine='xlsxwriter')pd.core.format.header_style = 无data.to_excel(writer, sheet_name='test', index=False)工作簿 = writer.book工作表 = writer.sheets['test']font_fmt = workbook.add_format({'font_name': 'Arial', 'font_size': 10})header_fmt = workbook.add_format({'font_name': 'Arial', 'font_size': 10, 'bold': True})worksheet.set_column('A:A', None, font_fmt)worksheet.set_row(0，无，header_fmt)writer.save()

由 jmcnamara 解释，谢谢:p>

在 Excel 中，单元格格式覆盖行格式覆盖列格式.pd.core.format.header_style 被转换为格式并应用于标题中的每个单元格.因此，默认值不能被 set_row() 覆盖.将 pd.core.format.header_style 设置为 None 意味着标题单元格没有用户定义的格式，因此它可以被 set_row() 覆盖.

在版本 0.18.1 你必须改变

pd.core.format.header_style = 无

到:

pd.formats.format.header_style = 无

从 0.20 版开始，这又发生了变化

导入pandas.io.formats.excelpandas.io.formats.excel.header_style = 无

感谢 krvkir.

从 0.24 版开始，现在需要此功能

导入pandas.io.formats.excelpandas.io.formats.excel.ExcelFormatter.header_style = 无

感谢 克里斯·韦基奥.

I'm saving pandas DataFrame to_excel using xlsxwriter. I've managed to format all of my data (set column width, font size etc) except for changing header's font and I can't find the way to do it. Here's my example:

import pandas as pd
data = pd.DataFrame({'test_data': [1,2,3,4,5]})
writer = pd.ExcelWriter('test.xlsx', engine='xlsxwriter')

data.to_excel(writer, sheet_name='test', index=False)

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

font_fmt = workbook.add_format({'font_name': 'Arial', 'font_size': 10})
header_fmt = workbook.add_format({'font_name': 'Arial', 'font_size': 10, 'bold': True})

worksheet.set_column('A:A', None, font_fmt)
worksheet.set_row(0, None, header_fmt)

writer.save()

The penultimate line that tries to set format for the header does nothing.

解决方案

I think you need first reset default header style, then you can change it:

pd.core.format.header_style = None

All together:

import pandas as pd

data = pd.DataFrame({'test_data': [1,2,3,4,5]})
writer = pd.ExcelWriter('test.xlsx', engine='xlsxwriter')

pd.core.format.header_style = None

data.to_excel(writer, sheet_name='test', index=False)

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

font_fmt = workbook.add_format({'font_name': 'Arial', 'font_size': 10})
header_fmt = workbook.add_format({'font_name': 'Arial', 'font_size': 10, 'bold': True})

worksheet.set_column('A:A', None, font_fmt)
worksheet.set_row(0, None, header_fmt)

writer.save()

Explaining by jmcnamara, thank you:

In Excel a cell format overrides a row format overrides a column format.The pd.core.format.header_style is converted to a format and is applied to each cell in the header. As such the default cannot be overridden by set_row(). Setting pd.core.format.header_style to None means that the header cells don't have a user defined format and thus it can be overridden by set_row().

EDIT: In version 0.18.1 you have to change

pd.core.format.header_style = None

to:

pd.formats.format.header_style = None

EDIT: from version 0.20 this changed again

import pandas.io.formats.excel
pandas.io.formats.excel.header_style = None

thanks krvkir.

EDIT: from version 0.24 this is now required

import pandas.io.formats.excel
pandas.io.formats.excel.ExcelFormatter.header_style = None

thanks Chris Vecchio.