覆盖 Python 中的现有 excel 文件时图表丢失

Question

我正在使用 openpyxl 写入现有文件，一切正常。但是，将数据保存到文件后，图形就会消失。

我了解 Openpyxl 目前仅支持在工作表中创建图表。现有工作簿中的图表将丢失。

Python 中是否有任何替代库可以实现此目的。我只想提供一些值，所以所有的图表和计算都发生在 excel.

中

谢谢。

Answer 1

目前（2.2 版）不可能。

Answer 2

我从 python 得到了一些替代解决方案来执行 excel 宏，这可能是上述问题的解决方案。

创建一个 ExcelWorkbook.xlsm 并编写 excel 宏（这很容易，excel 宏重新编码可能会对您有所帮助）您想要执行的任何任务并执行宏来自 python。图形和形状对象将是安全的。

openpyxl 可用于读写 ExcelWorkbook.xlsm

from openpyxl import Workbook, load_workbook
import os
import win32com.client

#The excel macro should be written and saved (Excelworkbook.xlsm) before using this code. 
#Use macro codeExcelworkbook.xlsm to edit ExcelWorkBookContainGraph.xlsx
##################### Openpyxl #####################
#Open the Excelworkbook.xlsm (Macro workbook)
wb = load_workbook(filename='Excelworkbook.xlsm', read_only=False, keep_vba=True)
ws = wb.worksheets[0] #Worksheet will be sheet1[0]

##### Do the required task (read, write, copy..etc) in excel using openpyxl #####

#save Excelworkbook.xlsm
wb.save('Excelworkbook.xlsm')

#################### Run the excel macro #####################
if os.path.exists("Excelworkbook.xlsm"):
    xl=win32com.client.Dispatch("Excel.Application")
    xl.Workbooks.Open(Filename=os.path.dirname(os.path.abspath(__file__))+"\Excelworkbook.xlsm")#, ReadOnly=1)
    xl.Application.Run("Excelworkbook.xlsm!Module1.Macro1")
    xl.Application.Save() # if you want to save then uncomment this line and change delete the ", ReadOnly=1" part from the open function.
    xl.Application.Quit() # Comment this out if your excel script closes
    del xl  

############### Working with excel contains Graph ###############
xl=win32com.client.Dispatch("Excel.Application")
xl.Workbooks.Open(Filename=os.path.dirname(os.path.abspath(__file__))+"\ExcelWorkBookContainGraph.xlsx")#, ReadOnly=1)
try:
    xl.ActiveWorkbook.SaveAs("C:\ExcelExample\ExcelWorkBookContainGraph.xlsx")#Change the save path as per your requirment
    xl.Application.Quit() # Comment this out if your excel script closes
    del xl
except:
    #If you get some error while saving kill the running excel task in background
    print 'Error in saving file'
    xl.Application.Quit() # Comment this out if your excel script closes
    del xl

覆盖 Python 中的现有 excel 文件时图表丢失

Graphs lost while overwriting to existing excel file in Python

python

excel

openpyxl