Python Django/Pandas-创建Excel文件并作为下载

我正在尝试使用pandas创建一个Excel文件，并通过Django将其作为可下载文件提供给用户。我在这里找到了一些关于这个主题的不同答案，最后得到了以下代码：

        collection = [{"title": "something", "price": 34, "quantity": 23}, {..}]

        output = BytesIO()

        df = pd.DataFrame(collection, columns=['title', 'price', 'quantity'])

        writer = pd.ExcelWriter(output, engine='xlsxwriter')
        df.to_excel(writer, sheet_name='Sheet1')
        writer.save()

        output.seek(0)
        workbook = output.getvalue()

        response = StreamingHttpResponse(workbook, content_type='application/vnd.openxmlformats-officedocument.spreadsheetml.sheet')
        response['Content-Disposition'] = f'attachment; filename={output_name}.xlsx'
        return response

在我尝试打开生成的文件之前，一切都很好——我可以看到一个错误，说明文件已损坏或数据格式有问题。我怀疑这可能与数据是二进制的有关？我如何解决这个问题

解决方案

事实证明，我必须删除一些内容，因此代码现在看起来像这样，并且工作正常：

        collection = [{"title": "something", "price": 34, "quantity": 23}, {..}]

        output = BytesIO()

        df = pd.DataFrame(collection, columns=['title', 'price', 'quantity'])

        writer = pd.ExcelWriter(output, engine='xlsxwriter')
        df.to_excel(writer, sheet_name='Sheet1')
        writer.save()

        output.seek(0)
        # workbook = output.getvalue()

        response = StreamingHttpResponse(output, content_type='application/vnd.openxmlformats-officedocument.spreadsheetml.sheet')
        response['Content-Disposition'] = f'attachment; filename={output_name}.xlsx'
        return response

        collection = [{"title": "something", "price": 34, "quantity": 23}, {..}]

        output = BytesIO()

        df = pd.DataFrame(collection, columns=['title', 'price', 'quantity'])

        writer = pd.ExcelWriter(output, engine='xlsxwriter')
        df.to_excel(writer, sheet_name='Sheet1')
        writer.save()

        output.seek(0)
        # workbook = output.getvalue()

        response = StreamingHttpResponse(output, content_type='application/vnd.openxmlformats-officedocument.spreadsheetml.sheet')
        response['Content-Disposition'] = f'attachment; filename={output_name}.xlsx'
        return response

---

在Excel中打开时可能存在数据类型问题，请尝试将数据转换为字符串，然后创建Excel并重试

---

另一个想法是使用一组样本记录创建文件，而不是使用整个框架来验证是否存在数据问题。数据集中的Nan也可能存在问题。检查是否需要忽略/转换/替换该数据。

在Excel中打开时可能存在数据类型问题，请尝试将数据转换为字符串，然后创建Excel并重试

另一个想法是使用一组样本记录创建文件，而不是使用整个框架来验证是否存在数据问题。数据集中的Nan也可能存在问题。检查是否需要忽略/转换/替换该选项。

解决方案

事实证明，我必须删除一些内容，因此代码现在看起来像这样，并且工作正常：

        collection = [{"title": "something", "price": 34, "quantity": 23}, {..}]

        output = BytesIO()

        df = pd.DataFrame(collection, columns=['title', 'price', 'quantity'])

        writer = pd.ExcelWriter(output, engine='xlsxwriter')
        df.to_excel(writer, sheet_name='Sheet1')
        writer.save()

        output.seek(0)
        # workbook = output.getvalue()

        response = StreamingHttpResponse(output, content_type='application/vnd.openxmlformats-officedocument.spreadsheetml.sheet')
        response['Content-Disposition'] = f'attachment; filename={output_name}.xlsx'
        return response

        collection = [{"title": "something", "price": 34, "quantity": 23}, {..}]

        output = BytesIO()

        df = pd.DataFrame(collection, columns=['title', 'price', 'quantity'])

        writer = pd.ExcelWriter(output, engine='xlsxwriter')
        df.to_excel(writer, sheet_name='Sheet1')
        writer.save()

        output.seek(0)
        # workbook = output.getvalue()

        response = StreamingHttpResponse(output, content_type='application/vnd.openxmlformats-officedocument.spreadsheetml.sheet')
        response['Content-Disposition'] = f'attachment; filename={output_name}.xlsx'
        return response

解决方案

事实证明，我必须删除一些内容，因此代码现在看起来像这样，并且工作正常：

        collection = [{"title": "something", "price": 34, "quantity": 23}, {..}]

        output = BytesIO()

        df = pd.DataFrame(collection, columns=['title', 'price', 'quantity'])

        writer = pd.ExcelWriter(output, engine='xlsxwriter')
        df.to_excel(writer, sheet_name='Sheet1')
        writer.save()

        output.seek(0)
        # workbook = output.getvalue()

        response = StreamingHttpResponse(output, content_type='application/vnd.openxmlformats-officedocument.spreadsheetml.sheet')
        response['Content-Disposition'] = f'attachment; filename={output_name}.xlsx'
        return response

        collection = [{"title": "something", "price": 34, "quantity": 23}, {..}]

        output = BytesIO()

        df = pd.DataFrame(collection, columns=['title', 'price', 'quantity'])

        writer = pd.ExcelWriter(output, engine='xlsxwriter')
        df.to_excel(writer, sheet_name='Sheet1')
        writer.save()

        output.seek(0)
        # workbook = output.getvalue()

        response = StreamingHttpResponse(output, content_type='application/vnd.openxmlformats-officedocument.spreadsheetml.sheet')
        response['Content-Disposition'] = f'attachment; filename={output_name}.xlsx'
        return response

---

我想你可能把事情弄得比实际情况复杂得多

下面对我来说很好：

import pandas as pd
from django.http import HttpResponse

df = pd.DataFrame(data)
response = HttpResponse(content_type='application/vnd.openxmlformats-officedocument.spreadsheetml.sheet')
response['Content-Disposition'] = 'attachment; filename="filename.xlsx"'                                        
df.to_excel(response)
return response

---

我想你可能把事情弄得比实际情况复杂得多

下面对我来说很好：

import pandas as pd
from django.http import HttpResponse

df = pd.DataFrame(data)
response = HttpResponse(content_type='application/vnd.openxmlformats-officedocument.spreadsheetml.sheet')
response['Content-Disposition'] = 'attachment; filename="filename.xlsx"'                                        
df.to_excel(response)
return response