如何在django中设置excel文件的路径

Question

I'm using pandas ExcelWriter and openpyxl for creating excel in Django project. how would I set particular path in my project directory to save the created excel? thanks, in advance.

from pandas import ExcelWriter
df_view = obj_master.get_employee()
writer = ExcelWriter('PythonExportt.xlsx')
df_view.to_excel(writer, 'Sheet1')
writer.save()

Answer 1

use ./path/to/file to declare a local path

UPDATE

alternatively you can define the path in settings.py and then import it to any django file as

Settings.py:

BASE_DIR = os.path.dirname(os.path.dirname(os.path.abspath(__file__)))

Somewhere in Django:

from django.conf import settings
def write_to_excel(dataFrame, sheetName): 
writer = pd.ExcelWriter(settings.BASE_DIR, engine='xlsxwriter')
dataFrame.to_excel(writer, sheetName='Sheet1')
writer.save()

Answer 2

Probably the best way is to write the Pandas Excel stream to a memory stream, and then wrap this into a HTTP response:

from pandas import ExcelWriter

XLSX_MIME = 'application/vnd.openxmlformats-officedocument.spreadsheetml.sheet'

def some_excelfile_view(request):
    response = HttpResponse(content_type=XLSX_MIME)
    response['Content-Disposition'] = 'attachment; filename="PythonExport.xlsx"'

    # obtain obj_master
    # ...
    writer = pd.ExcelWriter(, engine='xlsxwriter')

    df_view = obj_master.get_employee()
    df_view.to_excel(writer, 'Sheet1')
    writer.save()
    return response

Then you can use a url that maps to this some_excelfile_view . If a user then visists that URL, it will perform a file download for the Excel file.

Answer 3

To get the path of the project directory, regardless of any constraint. The settings.py has the value of the project directory in BASE_DIR , you should import it and save the file

from myproject.settings import BASE_DIR
from pandas import ExcelWriter
import os

save_path = os.path.join(BASE_DIR, 'backup')

df_view = obj_master.get_employee()
writer = ExcelWriter('{}/PythonExportt.xlsx'.format(save_path))
df_view.to_excel(writer, 'Sheet1')
writer.save()