I am trying to incorporate uploading a basic text/csv file on my web app which runs flask to handle http requests. I tried to follow the baby example in flasks documentation running on localhost here. But when I try this code on my page it seems to upload but then just hangs and in fact my flask server freezes and I have to close terminal to try again...Ctrl+C doesn't even work.
I execute run.py:
#!/usr/bin/env python
from app import appif __name__ == '__main__':app.run(host='0.0.0.0', port=5000, debug=False, use_reloader=False)
and app is a directory in the same directory where run.py is with the following __init__.py:
import os
from flask import Flask
from werkzeug import secure_filename#Flask object initialization
#app flask object has to be created before importing views below
#because it calls "import app from app"
UPLOAD_FOLDER = '/csv/upload'
ALLOWED_EXTENSIONS = set(['txt', 'csv'])app = Flask(__name__)
app.config['UPLOAD_FOLDER'] = UPLOAD_FOLDER
and here is my views.py file which has all my routes:
from flask import render_template, request, redirect, url_for
from app import app
import os#File extension checking
def allowed_filename(filename):return '.' in filename and filename.rsplit('.',1)[1] in ALLOWED_EXTENSIONS@app.route('/', methods=['GET', 'POST'])
@app.route('/index.html', methods=['GET', 'POST'])
def index():if request.method == 'POST':submitted_file = request.files['file']if submitted_file and allowed_filename(submitted_file):filename = secure_filename(submitted_file.filename)submitted_file.save(os.path.join(app.config['UPLOAD_FOLDER'], filename))return redirect(url_for('uploaded_file', filename=filename))return '''<!doctype html><title>Upload new File</title><h1>Upload new File</h1><form action="" method=post enctype=multipart/form-data><p><input type=file name=file><input type=submit value=Upload></form>'''