pandas pivot_table 写入 excel 输出空工作表

Question

It's just so strange.

The pivot_table is definitely not empty. When I print it out it shows everything without problem. But when I try to write it to_excel with ExcelWriter(or just to_excel), it gives me an almost empty sheet(with values only and nothing else).

Here's my code:

result = df.pivot_table(
    index=['Client Code','Client Name'],
    values='Fiscal year',
    aggfunc = lambda x: '/'.join(list(set(str(v) for v in x)))
    )

writer = pd.ExcelWriter(f'resultnew.xlsx',mode='w',engine='openpyxl')
result.to_excel(writer,sheet_name='Data',index=False)
writer.save()

Hopefully there's someone can figure out what is problem.

Answer 1

I've figured it out myself. I just need to convert the pivot_table to_records and turn it to dataframe once again before export it to_excel , and the output is perfect. Simply change the codes like this:

pd.DataFrame(result.to_records()).to_excel(writer,sheet_name='Data',index=False)