How can I implement file uploads in Flask?

How can I implement file uploads in Flask?

To implement file uploads in Flask, you need to set up a form in HTML and handle the file in your Flask route.

What libraries do I need to use for file uploads?

You primarily need Flask itself, and you might also want to use Flask-WTF for form handling.

Can you show me a simple code example?

Sure! Here's a basic example:

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

app = Flask(__name__)
app.config['UPLOAD_FOLDER'] = 'uploads/'

@app.route('/', methods=['GET', 'POST'])
def upload_file():
    if request.method == 'POST':
        file = request.files['file']
        file.save(os.path.join(app.config['UPLOAD_FOLDER'], file.filename))
        return redirect(url_for('upload_file'))
    return render_template('upload.html')

What should the HTML form look like?

The HTML form should look like this:

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