Question

我尝试将数据框添加到现有的Excel文件中，我在这个问题下阅读了答案：How to write to an existing excel file without overwriting data (using pandas)?

filename = 'template.xlsx'
wb_target = load_workbook(filename)

writer = pd.ExcelWriter(filename, engine='openpyxl')
writer.wb_target = wb_target
writer.sheets = dict((ws.title, ws) for ws in wb_target.worksheets)

df_selection2.to_excel(writer,sheet_name='Selection',startrow=7, startcol=6,header=False, index=False)
writer.save()

但仍有一些问题：

IndexError                                Traceback (most recent call last)
<ipython-input-3-3ca40cf2bef3> in <module>()
     17 
     18 df_selection2.to_excel(writer,sheet_name='Selection',startrow=7, startcol=6,header=False, index=False)
---> 19 writer.save()
     20 
     21 #df_selection2.to_excel(writer,sheet_name='Selection',startrow=7, startcol=6,header=False, index=False)

C:\Anaconda3\lib\site-packages\pandas\io\excel.py in save(self)
    725         Save workbook to disk.
    726         """
--> 727         return self.book.save(self.path)
    728 
    729     def write_cells(self, cells, sheet_name=None, startrow=0, startcol=0):

C:\Anaconda3\lib\site-packages\openpyxl\workbook\workbook.py in save(self, filename)
    337             save_dump(self, filename)
    338         else:
--> 339             save_workbook(self, filename)
    340 
    341 

C:\Anaconda3\lib\site-packages\openpyxl\writer\excel.py in save_workbook(workbook, filename)
    266     archive = ZipFile(filename, 'w', ZIP_DEFLATED, allowZip64=True)
    267     writer = ExcelWriter(workbook, archive)
--> 268     writer.save(filename)
    269     return True
    270 

C:\Anaconda3\lib\site-packages\openpyxl\writer\excel.py in save(self, filename)
    248     def save(self, filename):
    249         """Write data into the archive."""
--> 250         self.write_data()
    251         self.archive.close()
    252 

C:\Anaconda3\lib\site-packages\openpyxl\writer\excel.py in write_data(self)
     91         archive.writestr(ARC_STYLE, tostring(stylesheet))
     92 
---> 93         archive.writestr(ARC_WORKBOOK, write_workbook(self.workbook))
     94         archive.writestr(ARC_WORKBOOK_RELS, write_workbook_rels(self.workbook))
     95 

C:\Anaconda3\lib\site-packages\openpyxl\writer\workbook.py in write_workbook(workbook)
     86 
     87     # book views
---> 88     active = get_active_sheet(wb)
     89     view = BookView(activeTab=active)
     90     root.bookViews =[view]

C:\Anaconda3\lib\site-packages\openpyxl\writer\workbook.py in get_active_sheet(wb)
     58     """
     59     idx = wb._active_sheet_index
---> 60     sheet = wb.active
     61     if sheet.sheet_state == "visible":
     62         return idx

C:\Anaconda3\lib\site-packages\openpyxl\workbook\workbook.py in active(self)
    128     def active(self):
    129         """Get the currently active sheet"""
--> 130         return self._sheets[self._active_sheet_index]
    131 
    132     @active.setter

IndexError: list index out of range

是因为我要修改的标签处于隐藏状态吗？

Answer 1

问题是您wb_target变量writer，然后尝试分配名为wb_target的{{1}}属性。 writer默认情况下没有该属性。因此，当您分配它时，您创建了它。这将导致无处可去。

相反，您需要将其分配给book的正确属性。这个例子令人困惑，因为他们使用的变量是book所以你可能认为这两个变量需要相同。他们没有！

这是您重写的代码，应该可以正常工作。

import pandas as pd
import numpy as np
from openpyxl import load_workbook

filename = 'template.xlsx'
wb_target = load_workbook(filename)

writer = pd.ExcelWriter(filename, engine='openpyxl')
# my key change
writer.book = wb_target
writer.sheets = dict((ws.title, ws) for ws in wb_target.worksheets)

df_selection2.to_excel(
    writer, sheet_name='Selection', startrow=7, 
    startcol=6, header=False, index=False)
writer.save()

无法通过writer.save保存excel

1 个答案: