在烧瓶中我想返回一个excel文件作为输出。
此代码适用于csv:
out = StringIO()
notification_df.to_csv(out)
resp = make_response(out.getvalue())
resp.headers["Content-Disposition"] = "attachment; filename=output.csv"
resp.headers["Content-type"] = "text/csv"
return resp
我尝试对它进行调整,以便它可以输出带有各种标签的excel文件(源自大熊猫数据框),但这不起作用:
output = StringIO()
writer = ExcelWriter(output)
trades_df.to_excel(writer, 'Tab1')
snapshots_df.to_excel(writer, 'Tab2')
# writer.close() # causes TypeError: string argument expected, got 'bytes'
resp = make_response(output.getvalue)
resp.headers['Content-Disposition'] = 'attachment; filename=output.xlsx'
resp.headers["Content-type"] = "text/csv"
return resp
问题是当我执行writer.close()时出现错误TypeError: string argument expected, got 'bytes'
。但是当我离开时,我得到:Exception: Exception caught in workbook destructor. Explicit close() may be required for workbook.
任何解决方案都适用。
答案 0 :(得分:2)
对于那些最终来到这里的人来说,这应该有效:
from flask import Response
import io
buffer = io.BytesIO()
df = pd.read_excel('path_to_excel.xlsx', header=0)
df.to_excel(buffer)
headers = {
'Content-Disposition': 'attachment; filename=output.xlsx',
'Content-type': 'application/vnd.ms-excel'
}
return Response(buffer.getvalue(), mimetype='application/vnd.ms-excel', headers=headers)