Graphs in xlsx File overwrite by openpyxl

Question

We need to update xlsx sheet using python script which do some calcualtion and update one worksheet. I choose openpyxl as it supoort writing/updating xlsx File. In the Excel sheet contain some graphs also but When I update excel sheet than graph does not work into excel and data update respectively. I think we had some issue for updating graph with openpyxl.Can anyone provide me some input to fix this issue

or In other word,In the Excel sheet I have 10 worksheet.In worksheet 1, it contain graphs. I have updated worksheet number 5. Worksheet is updated successfully. But I have loose the graphs of worksheet 1.

#!/usr/bin/env python
from openpyxl import load_workbook
import openpyxl 
print "pylx"
ddr_sam45_flop =  "Flip_Flop.xlsx"
flop_workbook     = load_workbook(ddr_sam45_flop)
raw_flop_workbook = flop_workbook.get_sheet_by_name(name ='RAW')
raw_flop_workbook.cell(row = 1 , column = 1).value = 889999
flop_workbook.save(ddr_sam45_flop)
print "End"

(Please consider me new to openpyxl)

Answer 1

Openpyxl does not support graphs or chart as of now

Answer 2

Any graphs that exist in the document before opening will be deleted after saving. The only way around this ( i know of) is to create the chart in code.

Here is the documentation on how to create a chart in openpyxl

The example is a little broken, compare to this instead.

    values = Reference(ws, (1, 1), (1, 95))
    series = Series(values, title="Sample" )
    chart = LineChart()
    chart.append(series)
    ws.add_chart(chart)