I'm currently in the process of making a program to upload and read csv files. I'm throwing a key error when submitting a file to be uploaded and can't really seem to figure out why and was hoping for some help. It uploaded and saved the file before I tried adding the read file functionality but after that, it started having issues. The error is saying that 'filename' is a key error even though it seemed to work fine before I tried reading the file. Help or leading me down the right path would be greatly appreciated. Thanks so much! Views.py from flask import render_template, request, redirect from app import app import os import csv @app.route('/', methods=["GET", "POST"]) def index(): data = [] if request.method == 'POST': if request.files: uploaded_file = request.files['filename'] # This line uses the same variable and worked fine uploaded_file.save(os.path.join(app.config['FILE_UPLOADS'], uploaded_file.filename)) f = request.form['filename'] # This is the line throwing the error with open(f) as file: csv_file = csv.reader(file) for row in csv_file: data.append(row) return redirect(request.url) return render_template('index.html', data=data) @app.route('/help') def help(): return render_template('help.html') app.config['FILE_UPLOADS'] = "C:\\Users\\Zachary\\Documents\\VSCode_Projects\\monday_webapp\\app\\static\\file\\uploads" Index.html {% extends "base.html" %} {% block title %}Home{% endblock %} {% block body %} <div class="jumbotron"> <h1 style='text-align: center'>Zach's Web Application</h1> </div> <div> <p class="lead">Upload a csv file to view its data.</p> <form method="POST" enctype="multipart/form-data" action="/"> <input type="file" id="myFile" name="filename" accept=".csv"> <input type="submit"> </form> </div> <div> {{ data }} </div> <div> {% endblock %} Continue reading...
