I am printing some formula in one of the Excel sheets:
wsOld.cell(row = 1, column = 1).value = "=B3=B4"
But I cannot use its result in implementing some other logic, as:
if((wsOld.cell(row=1, column=1).value)='true'):
# copy the 1st row to another sheet
Even when I am trying to print the result in the command line, I end up printing the formula:
>>> print(wsOld.cell(row=1, column=1))
>>> =B3=B4
How can I get the result of the formula in a cell and not the formula itself?
openpyxl support either the formula or the value of the formula. You can select which using the data_only
flag when opening a workbook. However, openpyxl does not and will not calculate the result of a formula. There are libraries out there like pycel which purport to do this.
Openpyxl doesn't support excel 100% for calculating the formula. It supports only very basic formulas. If you want to calculate all formula in workbook you should use xlwings library.
I have solved the matter using a combination of openpyxl and pandas:
import pandas as pd
import openpyxl
from openpyxl import Workbook , load_workbook
source_file = "Test.xlsx"
# write to file
wb = load_workbook (source_file)
ws = wb.active
ws.title = "hello world"
ws.append ([10,10])
wb.save(source_file)
# read from file
df = pd.read_excel(source_file)
sum_jan = df ["Jan"].sum()
print (sum_jan)