python 2.7 - how to get formula result in excel using xlwings

Question

What i want to do is 1)get a folmula result in excel and 2)update the values to the existing excel file. [ I created and wrote the folmula using "xlsxwriter". But when I tried openpyxl (or pandas) to retrieve the folmula result, it returns 0. I want to use "xlwings" to solve this problem, but no idea how to do it. can anyone help?

#openpyx
wb = openpyxl.load_workbook(filename=xlsx_name,data_only=True)
ws = wb.get_sheet_by_name("sheet1")
print "venn_value",(ws.cell('X2').value)
#pandas 
fold_merge_data=pd.read_excel(xlsx_name,sheetname=1)
print fold_merge_data['Venn diagram'][:10]

Answer 1

Yes, xlwings can solve this problem for you because it uses pywin32 objects to interact with Excel, rather than just reading/writing xlsx or csv documents like openpyxl and pandas. This way, Excel actually executes the formula, and xlwings grabs the result.

In order to get the value you can do:

import xlwings as xw
sheet = xw.sheets.active # if the document is open
#otherwise use sheet = xw.Book(r'C:/path/to/file.xlsx').sheets['sheetname']
result = sheet['X2'].value

Also, note that you can set the formula using, for example

sheet['A1'].value = '=1+1' # or ='B1*2' if you want to reference other cells