How to write data to a text file in Flask? [duplicate]
My guess is you are not specifying the correct directory. If flask is like Django, the path may be in different place with app is running. Try printing os.listdir() to see where you are.
from os import listdir@app.route('/', methods=['GET', 'POST'])def my_form(): inputed_email = request.form.get("email") if request.method == 'POST' and inputed_email: print(listdir) ## print listdir python 2 # write to file with open('/var/www/FlaskApp/FlaskApp/test3.txt', 'w') as f: f.write(str(inputed_email)) return render_template('my-form.html', email=inputed_email) return render_template('my-form.html')If it is printing nothing to the console, then the error is before the line print.
Try running this
$ export FLASK_ENV=development$ export FLASK_DEBUG=True$ export FLASK_APP=<your .py file>$ flask runNow the server will respond with a traceback, not just Internal Server Error. But don't use FLASK_DEBUG option in production.