How to merge multiple xlsx files into one single xlsx file with different sheets by openpyxl

Question

I would like to merge several xlsx files from list into one so that each sheet has the name of the next merged file. Single xlsx files have one sheet with data stored in columns and rows. To create single files I am using openpyxl library.

xlsx_files = ['u_gen_inf.xlsx', 'u_dates_inf.xlsx', 'u_ctrl_inf.xlsx']

loop I would like to create

from openpyxl import load_workbook, Workbook

for f in xlsx_files:
    ? load_workbook() - universal code independent of the number of xlsx files

wb_master.save('master_users_inf.xlsx')

Asked By: Kubix

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Source

Answer 1

You’re close, you just need to implement (inside your for loop) create_sheet to create a new sheet in the master file and then use iter_rows to grab all the values from all the rows.

Here is a proposition (without your comments to make a short code) :

from openpyxl import load_workbook, Workbook

wb_master = Workbook()

xlsx_files = ['u_gen_inf.xlsx', 'u_dates_inf.xlsx', 'u_ctrl_inf.xlsx']

for f in xlsx_files:
    sub_wb = load_workbook(f)
    sub_ws = sub_wb.active
    
    wb_master_sheet = wb_master.create_sheet(sub_ws.title)
    
    for row in sub_ws.iter_rows():
        for cell in row:
            wb_master_sheet[cell.coordinate].value = cell.value
    
   #wb_master_sheet.column_dimensions["A"].width = 20 #uncomment this line to set a width    

wb_master.remove_sheet("Sheet") #or del wb_master["Sheet"] 
wb_master.save('master_users_inf.xlsx')

Answered By: Timeless

How to merge multiple xlsx files into one single xlsx file with different sheets by openpyxl

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