Put Pandas Data Frame to Existing Excel sheet

Question

Is there any way to put data frame into existing Excel sheet. I have a Data Frame that I need to copy into specific Excel sheet to specific location in the sheet, to cell A2, so it will mirror(paste) the whole data frame. Starting from selected cell(like the the picture) and including cells below. In this way I do not have to assign values to specific cell one by one.

df = pd.DataFrame([[1,2,3],[1,2,3]], columns=list('ABC')

Asked By: IGRACH

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Source

Answer 1

You can to read the excel file withpd.read_excel(), copy the firs row to your DataFrame and save the DataFrame as excel file with a same name.

Answered By: Dov Wachtfogel

Answer 2

It worked for me using xlwings. Keeping all data and style format.

import xlwings as xw
import pandas as pd

#create DF
df = pd.DataFrame([[7,2,3],[1,2,3]], columns=list('ABC'))

#load workbook
app = xw.App(visible=False)
wb = xw.Book('doc.xlsx')  
ws = wb.sheets['Sheet1']

#Update workbook at specified range
ws.range('A2').options(index=False).value = df

#Close workbook
wb.save()
wb.close()
app.quit()

[Result]

Data Frame is copied to specific Excel sheet Sheet1 to specific location cell A2, without losing any information. In this example, the chart is updated automatically referencing A2:C4.

Answered By: AziMez

Answer 3

Pandas allows you to write a dataframe to excel and specify the column and row number to start from.

So in your case, you can mention

df.to_excel(writer, sheet_name='Sheet1', header=None, index=False,
         startcol=1, startrow=2)

The sheet_name needs to be updated accordingly

So you entire code could look like:

import pandas as pd
from openpyxl import load_workbook

fn = r'C:YourFolderdoc.xlsx'
book = load_workbook(fn)

df = pd.DataFrame([[1,2,3],[1,2,3]], columns=list('ABC'))

writer = pd.ExcelWriter(fn, engine='openpyxl')

writer.book = book
writer.sheets = dict((ws.title, ws) for ws in book.worksheets)

df.to_excel(writer, sheet_name='Sheet1', header=None, index=False,
             startcol=1, startrow=2)

writer.save()

Answered By: Gangula

Answer 4

You can check, if the given sheet exist and you can delete the existing sheet and add a new one.

import xlwings as xw
def df_to_excel_util(excel,sheet_to_dataFrame_map):

    with xw.App(visible=False) as app:
        wb = app.books.open(excel)            
        current_sheets = [sheet.name for sheet in wb.sheets]
        
        for sheet_name in sheet_to_dataFrame_map.keys():
            if sheet_name in  current_sheets:
                wb.sheets[sheet_name].delete()
            
            new_sheet = wb.sheets.add(after=wb.sheets.count)
            new_sheet.range('A1').value = sheet_to_dataFrame_map.get(sheet_name)
            new_sheet.name = sheet_name
        wb.save()

Answered By: Arpan Saini

Put Pandas Data Frame to Existing Excel sheet

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