使用 Python 和 XLSXWriter 将格式应用于多个 Excel 工作表

Question

我有两个数据框如下：

import pandas as pd 
import numpy as np
from datetime import date

df = pd.DataFrame({'Data': [10, 22, 31, 43, 57, 99, 65, 74, 88],
                  'Data2':[10, 22, 31, 43, 57, 99, 65, 74, 88],
                  'Data3':[10, 22, 31, 43, 57, 99, 65, 74, 88]})

df2 = pd.DataFrame({'df2_Data': ['blue', 'yellow', 'purple', 'orange', 'green', 'brown', 'gray', 'white', 'red'],
                  'df2_Data2':['bike', 'car', 'bus', 'train', 'boat', 'truck', 'plane', 'scooter', 'skateboard'],
                  'df2_Data3':['chicken', 'cow', 'dog', 'crocodile', 'snake', 'pig', 'rat', 'mouse', 'monkey']})

我可以使用以下代码将 df 以所需的格式导出为 Excel 中的单个 sheet：

today = date.today()
d2 = today.strftime("%B %d, %Y")



writer = pd.ExcelWriter('ExcelExample{}.xlsx'.format(d2), engine='xlsxwriter')

df.to_excel(writer, sheet_name='Sheet1')
workbook  = writer.book
worksheet = writer.sheets['Sheet1']

header_format = workbook.add_format({
    'bold': True,
    'text_wrap': True,
    'valign': 'top',
    'fg_color': '#38C4F1',
    'font_color': 'FFFFFF',
    'border': 1})

for col_num, value in enumerate(df.columns.values):
    worksheet.write(0, col_num + 1, value, header_format)
    
writer.save()

给出这个输出

或者，我可以使用以下代码将两个数据帧导出为单独的 sheets 而无需格式化：

writer = pd.ExcelWriter('ExcelExample{}.xlsx'.format(d2), engine='xlsxwriter')

# Write each dataframe to a different worksheet.
df.to_excel(writer, sheet_name='Sheet1')
df2.to_excel(writer, sheet_name='Sheet2')

# Close the Pandas Excel writer and output the Excel file.
writer.save()

如何手动或递归地将格式应用于所有 sheet？

Answer 1

XlsxWriter 库中没有简单的方法可以做到这一点，自 2014 年以来这一直是个问题。(https://github.com/jmcnamara/XlsxWriter/issues/111) 您可以使用 worksheet.write() 方法（就像您已经做的那样），也可以使用辅助函数。我刚找到这个图书馆：

https://github.com/webermarcolivier/xlsxpandasformatter

xlsxpandasformatter 库为 XlsxWriter 和 pd.to_excel() 提供了几个辅助函数。
你可能会去做这样的事情：

from xlsxpandasformatter import FormatedWorksheet
pd.formats.format.header_style = None

with pd.ExcelWriter("output_file.xlsx", engine="xlsxwriter", datetime_format="%B %d, %Y") as writer:
    workbook = writer.book

    header_format = workbook.add_format({
        'bold': True,
        'text_wrap': True,
        'text_v_align': 'top',
        'fg_color': '#38C4F1',
        'font_color': 'FFFFFF',
        'border': 1})
    
    all_df = [df1, df2]
    sheet_num = 1

    for df in all_df:
        sheetname = 'Sheet' + str(sheet_num)
        sheet_num += 1
        df.to_excel(writer, sheet_name = sheetname , index=False)

        worksheet = writer.sheets[sheetname]

        formattedWorksheet = FormatedWorksheet(worksheet, workbook, df)

        formattedWorksheet.format_header(headerFormat=header_format)
        formattedWorksheet.MoreMethodsThatYouCanApply()

        formattedWorksheet.apply_format_table()

Answer 2

[post][1] 中的以下代码使我能够实现将格式应用于多张纸的目标：

writer = pd.ExcelWriter('ExcelExample{}.xlsx'.format(d2), engine='xlsxwriter')
sheets_in_writer=['Sheet1','sheet2']

data_frame_for_writer=[df, df2]

for i,j in zip(data_frame_for_writer,sheets_in_writer):
    i.to_excel(writer,j,index=False)
    
#(max_row, max_col) = df.shape
#column_settings = [{'header': column} for column in df.columns]


### Assign WorkBook
workbook=writer.book
# Add a header format
header_format = workbook.add_format({'bold': True,'text_wrap': True,'size':10,
                                                      'valign': 'top','fg_color': '#c7e7ff','border': 1})


### Apply same format on each sheet being saved
for i,j in zip(data_frame_for_writer,sheets_in_writer):
    for col_num, value in enumerate(i.columns.values):
        writer.sheets[j].set_column(0, max_col - 1, 12)
#       writer.sheets[j].add_table(0, 0, max_row, max_col - 1, {'columns': column_settings,'autofilter': True})
        writer.sheets[j].write(0, col_num, value, header_format)
        writer.sheets[j].autofilter(0,0,0,i.shape[1]-1)
        writer.sheets[j].freeze_panes(1,0)
writer.save()


  [1]:

Answer 3

我使用以下函数使用 Xlsxwriter 格式化 Excel 中的两个选项卡。我有两个数据框，这完全符合我的预期。

def format_excel(writer):
""" Add Excel specific formatting to the workbooks for main report
"""
    workbook = writer.book
    worksheet = writer.sheets['Networks Selected']
    worksheet.set_zoom(120)
    worksheet.autofilter('$A:$G')
    worksheet2 = writer.sheets['No Primary Selected']
    worksheet2.set_zoom(120)
    worksheet2.autofilter('$A:$G')

    # Add some cell formats for columns with numbers
    format1 = workbook.add_format({'num_format': '00.00%'})
    format2 = workbook.add_format({'num_format': '0.00'})
    format3 = workbook.add_format({'num_format': 'mm/dd/yyyy'})

    # Set the column width and format. First Sheet
    worksheet.set_column('A:A', 15)
    worksheet.set_column('B:B', 25)
    worksheet.set_column('C:E', 30)
    worksheet.set_column('F:G', 15)
    worksheet.set_column('H:H', 15, format3)

    # Set the column width and format. Second Sheet
    worksheet2.set_column('A:A', 15)
    worksheet2.set_column('B:B', 25)
    worksheet2.set_column('C:G', 30)
    worksheet2.set_column('F:G', 15)
    worksheet2.set_column('H:H', 15, format3)

然后我这样写输出并调用函数：

writer = pd.ExcelWriter(f"Networks Selected List v2.xlsx", engine='xlsxwriter')
df_primary.to_excel(writer, sheet_name='Networks Selected', index = False)
df_no_primary.to_excel(writer, sheet_name='No Primary Selected', index = False)
format_excel(writer)
writer.save()

使用 Python 和 XLSXWriter 将格式应用于多个 Excel 工作表

Applying formatting to multiple Excel sheets using Python and XLSXWriter

python

excel

pandas

xlsxwriter