Flask Upload读取数据

参考：https://stackoverflow.com/questions/33070395/not-able-to-parse-a-csv-file-uploaded-using-flask

Flask上传表单页面代码：

<form action="" method="post" enctype="multipart/form-data">
     <p><input type="file" name="file"/></p>
     <p><input type="submit" value="Upload"/></p>
</form>

 

后台读取数据，以csv数据为例：

@app.route("/")
def upload():
    f = request.files['file']
    if not f:
        return "No file"

    stream = io.StringIO(f.stream.read().decode("UTF8"), newline=None)
    csv_input = csv.reader(stream)
    for row in csv_input:
        print(row)

    stream.seek(0)
    result = transform(stream.read())

    response = make_response(result)
    response.headers["Content-Disposition"] = "attachment; filename=result.csv"
    return response