app1.py

from flask import Flask, render_template, request, redirect, url_for
import os

app = Flask(__name__)

# Set the upload folder
UPLOAD_FOLDER = 'data'
app.config['UPLOAD_FOLDER'] = UPLOAD_FOLDER

# Route for the upload page
@app.route('/upload')
def upload_file():
   return render_template('upload.html')

# Route for handling the file upload
@app.route('/uploader', methods=['POST'])
def upload_file_handler():
   # Get the uploaded file
   file = request.files['file']

   # Save the file to the upload folder
   filename = file.filename
   file.save(os.path.join(app.config['UPLOAD_FOLDER'], filename))

   # Redirect to the upload page with a success message
   return redirect(url_for('upload_file', message='File uploaded successfully.'))

if __name__ == '__main__':
   app.run(debug=True)