将数据框导出到工作簿中的现有 Excel 工作表会破坏其他工作表中的数据透视切片器连接

Question

我的代码的工作方式与我希望的完全一样，从 df 获取数据并将其插入到所需的 Excel 文件中，同时跳过相应的行。但是，当我点击 .save() 函数时，其他引用数据的工作表（主要通过枢轴）似乎会中断，即使作者没有触及它们。我可以将数据插入另一个 Excel 文件，复制并粘贴与 python 数据放置的完全相同的数据，并且相应的工作表不会中断，但会显示正确的信息。当 Python 写入文件时，如何阻止其他工作表损坏？

filename_in = 'File Location In'
filename_out = 'File Location Out'
sheet_name = 'Detail'
pos_detail_data_df.to_excel(filename_in, sheet_name=sheet_name, header = False, index = False)
df = pd.read_excel(filename_in, sheet_name=sheet_name)
book = load_workbook(filename_in)
writer = pd.ExcelWriter(filename_out, engine='openpyxl')
writer.book = book
writer.sheets = dict((ws.title, ws) for ws in book.worksheets)
writer.sheets
df.to_excel(writer, sheet_name, index=False, startrow = 2, header = False)
writer.save()

编辑： 代码已更新以反映来自下方的帮助。但是，现在该过程将简单地从我的 filename_out 中删除所有内容，并仅将其替换为 filename_in 中的工作表

Answer 1

我找到了一个带有切片器的 Excel 文件，所以我看了一下。

示例文件：

• 网站：https://www.contextures.com/excelpivottableslicers.html#download

试试：

import pandas as pd
from openpyxl import load_workbook

# sample Excel file with slicers.
# if required download and unzip and put in the folder with this script
sample_file = 'https://www.contextures.com/pivotsamples/regionsalesslicer.zip'

# set your filename_in, filename_out, and sheet_name
filename_in = 'regionsalesslicer.xlsx'
filename_out = 'regionsalesslicerUpdated.xlsx'
sheet_name = 'Sales Data'

# read in the Excel file with pd.read_excel rather than pd.ExcelFile
# just to play safe and avoid any BadZipFile: File is not a zip file errors
df = pd.read_excel(filename_in, sheet_name=sheet_name)



##################  WHATEVER YOU WANT BELOW UNTIL LINE 37 ##################

# check the contents
print(df.head(2), '\n')

# make a change (or changes) to your df
# in the case just swap 'Carrot' for 'Orange' in the 'Product' column
df.loc[df['Product'] == 'Carrot', 'Product'] = 'Orange'

# check the contents after the change
print(df.head(2), '\n')

# as long as you have imported from the top two lines and read the file
# and not called ExcelWriter before this point all the other lines above
# are up to you.

##################  WHATEVER YOU NEED ABOVE AFTER LINE 15 ##################



# from this point on try...
book = load_workbook(filename_in)
writer = pd.ExcelWriter(filename_out, engine='openpyxl')
writer.book = book
writer.sheets = dict((ws.title, ws) for ws in book.worksheets)

df.to_excel(writer, sheet_name, index=False)

writer.save()

在生成的文件中（在上面的示例代码中，我们使用了filename_out = 'regionsalesslicerUpdated.xlsx'），切片器仍然有效。

示例：

显示“橙色”。让我们刷新数据...

---

切片器/过滤器显示“橙色”...

从 pandas 导出到 Excel 并没有删除任何工作表等...

我们已成功将数据框覆盖到 Excel 中的现有工作表中。