Python：如何使用xlsxwriter更改单元格num类型

Question

I am using python to convert my .csv file to xlsx files , file conversion happens successfully. At the same time I would like to change the cell num type also, like where ever there are float type xx.xxxx, that will be reduced to .xx (2 decimals) values.

input test.csv sheet, seperated by ","

Name        Date        Total request   sas rate
rasta777    16062017    387865          89.3456
rasta777    16062017    291293          67.675
rasta777    16062017    256418          100
rasta777    16062017    251558          98.98

I have already tried the below python script using xlsxwriter , but getting an error.

import os
import glob
import csv
from xlsxwriter.workbook import Workbook

for csvfile in glob.glob(os.path.join('.', 'hourly.csv')):
workbook = Workbook(csvfile + '.xlsx')
worksheet = workbook.add_worksheet()
format = workbook.add_format()
format.set_bold()
format.set_font_color('blue')
format.set_num_format('0x02')
format1 = workbook.add_format({'font_color': 'blue'})
with open(csvfile, 'rb') as f:
    reader = csv.reader(f)
    for r, row in enumerate(reader):
        for c, col in enumerate(row):
            worksheet.write(r, c, col)
            worksheet.set_row(0, 20, format)
            worksheet.set_column('A:P', format)
workbook.close()

getting error that

"TypeError: unsupported operand type(s) for *: 'Format' and 'int'"

My second problem is generated output (getting output if I remove worksheet.set_column('A:P', format) ) gives cell type as text, whereas my data is all of numerical values except headers.

Answer 1

Last time I checked XlsxWriter's worksheet did not support changing the cell type after the value was written. When you want to write a value of specific type, you have to write it using a method specific to a type, like so:

worksheet.write_datetime(idx, fld_idx, fld, date_format)

You also have to specify format while writing and I don't think it's possible to change the format after the fact.

Generally, I've learned by experience with XlsxWriter that it's better to prepare everything you need before writing and then write the cell once with all the correct values. So eg I use the date_format predefined the usual way while writing the datetime to the cell. That works.

Read up on type-specific methods here: http://xlsxwriter.readthedocs.io/worksheet.html , in particular:

write_string()
write_number()
write_blank()
write_formula()
write_datetime()
write_boolean()
write_url()