python中的.xlsx下载问题

Question

I am new to Python development.

I am developing a flask API in Python that will help to download one excel file in .xlsx format. my code is generating the file in .xlsx format but when I downloading the report I am getting the error: "File format or file extensions are not valid. Verify the file has not been corrupted" .

Please help me on this.

import io
import pandas as pd
from flask import send_file

def get_data():
    buf = io.BytesIO()
    with pd.ExcelWriter(buf, date_format='dd/mm/yyyy', datetime_format='dd/mm/yyyy') as test:
        dtl_ext = detail.to_excel(test, index=False,encoding='utf-16')
        detail_rec.save()
        excel_data = buf.getvalue()
        buf.seek(0)
        return send_file(
            buf,
            mimetype='application/vnd.openxmlformats-officedocument.spreadsheetml.sheet',
            attachment_filename='test11.xlsx',
            as_attachment=True,
            cache_timeout=0
        )

Answer 1

You can use the following libraries to make it easier:

• http://flask.pyexcel.org/en/latest/
• https://github.com/pyexcel/pyexcel-xls
• https://github.com/pyexcel/pyexcel-xlsx

After you have installed them (check the links for that). Import them in Python in the following manner:

• import flask_excel as excel
• import pyexcel.ext.xls
• import pyexcel.ext.xlsx

Then:

@app/route('/download', methods=['GET'])
def download_data():
    sample_data=[0, 1, 2]
    excel.init_excel(app)
    extension_type = "xlsx"
    filename = "test123" + "." extension_type
    d = {'colName': sample_data}
    return excel.make_response_from_dict(d, file_type=extension_type, file_name=filename)
    # check the flask-excel library from different export option. 
    # This one uses a dictionary of lists. 
    # You can do a lists of dictionary, simply an array, so on and so forth