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问题:
Hi I have a quick question. I didn't find answer in internet maybe someone of you can help me.
So i want to save workbook as attachment but I don't know how lets see an example :
from openpyxl import Workbook from openpyxl.cell import get_column_letter wb = Workbook(encoding='utf-8') dest_filename = 'file.xlsx' ws = wb.worksheets[0] ws.title = "range names" for col_idx in xrange(1, 40): col = get_column_letter(col_idx) for row in xrange(1, 600): ws.cell('%s%s'%(col, row)).value = '%s%s' % (col, row) ws = wb.create_sheet() ws.title = 'Pi' ws.cell('F5').value = 3.14
Then I tried :
response = HttpResponse(wb, content_type='application/vnd.ms-excel') response['Content-Disposition'] = 'attachment; filename="foo.xls"' return response
It's returning xlsx file indeed but in file there is only object adres not the content of file:
Can someone help ?
回答1:
Give it a try:
from openpyxl.writer.excel import save_virtual_workbook ... response = HttpResponse(save_virtual_workbook(wb), content_type='application/vnd.ms-excel')
save_virtual_workbook was specially designed for your use case. Here's a docstring:
"""Return an in-memory workbook, suitable for a Django response."""
回答2:
I usually use
ws = wb.add_sheet("Pi")
instead of
ws = wb.create_sheet() ws.title = "Pi"
Moreover, you can try to do: (see documentation)
wb.save(stream)
and then use stream in HttpResponse.
回答3:
On at least some versions of django/python/openpyxl, the given solution does not work. See https://bitbucket.org/openpyxl/openpyxl/issues/657/save_virtual_workbook-generates-junk-data
Simple working solution:
wb = Workbook(write_only=True, encoding='utf-8') ws = wb.create_sheet() for row in data: ws.append([str(cell) for cell in row]) response = HttpResponse(content_type='application/vnd.ms-excel') wb.save(response)
What's happening here is that Django's HttpResponse is a file-like object. Workbook.save() can take a file-like object. (Internally, it uses zipfile, which takes either a filename or a file-like object.)
If you're manipulating the file in memory, this is the simplest and probably most efficient solution. A streaming response doesn't really make sense since the data is not being created with a generator. Even if save_virtual_workbook works, the data it writes is generated as a block before it's readable.
The other option would be to create a NamedTemporaryFile (from tempfile or Django's wrapper), pass that into Workbook.save(), then use FileResponse to stream that from the filesystem instead of from memory.
