如何使用XlsxWriter阻止Excel以科学计数法显示数字？

Question

I'm exporting data to XLSX using pandas, which in turn is using XlsxWriter . I've experimented with the formatting options I've found (eg float_format , despite the fact that it seemed like the wrong answer based on the source), but I can't find anything that prevents Excel from interpreting numbers in scientific notation.

For example, if I write 0.000000000001 , the underlying cell value in Excel is 0.000000000001 , but the display value is 1E-12 . I know that I can write the number as a string, but I'd like the value to be numeric in Excel.

Answer 1

You cannot stop Excel from displaying an unformatted number in whatever format it thinks is suitable. The only way to guarantee the format is to specify a numerical format for the data.

Unfortunately there is currently no way to do this in XlsxWriter and or, as a result, in Pandas.

A feature such as this is on the TODO list however it probably won't be available for a while.

As a workaround I recommend getting a reference to the underlying workbook and worksheet and overwriting any cells that you wish to be formatted with the same data from the Pandas dataframe and a XlsxWriter format. I'll update later with an example of how to do that.

Disclaimer: I wrote XlsxWriter and the Pandas/XlsxWriter integration code. The issue here is really to do with XlsxWriter limitations and not Pandas.

Answer 2

You can set the length of number and then use code like the following:

import xlsxwriter

wb = xlsxwriter.Workbook('Test.xlsx')
ws = wb.add_worksheet('Num')

cell_format = wb.add_format({'num_format': '0.00000000000000'})
ws.write('A1', 0.000000000001, cell_format)

wb.close()

Answer 3

Just format the number when you specify in the write() method. Eg:

import xlsxwriter

wb = xlsxwriter.Workbook('myfile.xlsx')
ws = wb.add_worksheet('testme')
ws.write('A1', '%s' %123232323232323232435454546565)
wb.close()