为Django应用程序将数据导出到excel时出错

Question

我试图写一些代码，从网站导出一些数据到excel表格。这是我试图用Django重写整个网站的一部分。下面是我为导出编写的脚本。在

def national_proposal_export_xlsx(modeladmin, request, queryset):
    import openpyxl
    from openpyxl.cell import get_column_letter
    response = HttpResponse(content_type='application/vnd.openxmlformats-officedocument.spreadsheetml.sheet')
    response['Content-Disposition'] = 'attachment; filename=conference_proposals_export.xlsx'
    wb = openpyxl.Workbook()
    ws = wb.get_active_sheet()
    ws.title = "Conference_proposals"

    row_num = 0

    columns = [
        (u"Master", 15),
        (u"Code", 15),
        (u"Title", 70),
        (u"Begin Time", 15),
        (u"End Time", 15),
        (u"Event type", 15),
        (u"Status", 15),
        # (u"Published", 15),
        # (u"Up to date", 15),
    ]

    for col_num in range(len(columns)):
        c = ws.cell(row=row_num + 1, column=col_num + 1)
        c.value = columns[col_num][0]
        # c.style.font.bold = True
        ws.column_dimensions[get_column_letter(col_num+1)].width = columns[col_num][1]

    for obj in queryset:
        row_num += 1
        row = [
            obj.master,
            obj.code,
            obj.title,
            obj.begin_time,
            obj.end_time,
            obj.event_type,
            obj.status,
            # obj.published,
            # obj.up_to_date,
        ]

        for col_num in range(len(row)):
            c = ws.cell(row=row_num + 1, column=col_num + 1)
            c.value = row[col_num]
            c.style.alignment.wrap_text = True

    wb.save(response)
    return response

但由于某些原因，我得到了以下错误：

ValueError at /admin/events/nationalconferenceproposal/ Cannot convert 9000476 | TEST SESSION 001 (draft) to Excel Request Method: POST Request URL: http://localhost:8000/admin/events/nationalconferenceproposal/ Django Version: 1.7.3 Exception Type: ValueError Exception Value:
Cannot convert 9000476 | TEST SESSION 001 (draft) to Excel Exception Location: /Users/dthota/Code/venvs/planning/lib/python3.4/site-packages/openpyxl/cell/cell.py in _bind_value, line 217 Python Executable: /Users/dthota/Code/venvs/planning/bin/python Python Version: 3.4.3

它表示错误与最后一个for循环中的c.value = row[col_num]有关。但我不明白！在

Answer 1

我知道这是一个老问题，但我只是在努力解决一个类似的问题。对我来说，解决方案是将行[col_num]转换为字符串：

c.value = str(row[col_num])

请注意，数据随后以文本形式保存在excel工作簿上，因此，如果要对数据进行计算等，则可能需要其他内容。在