Flask snippets

flask_download_file.py

def download_file():
    """
    http://code.runnable.com/UiIdhKohv5JQAAB6/how-to-download-a-file-generated-on-the-fly-in-flask-for-python
    """
    ...
    some_text = ""
    filename = "FILENAME"
    response = make_response(some_text, 200)
    response.content_type = "text/plain"
    response.headers[
        "Content-Disposition"] = "attachment; filename={}.txt".format(
          filename)
    return response

flask_internal_log.py

# https://www.reddit.com/r/learnpython/comments/282y58/how_to_change_terminal_output_format_in_flask/
from flask import Flask
from werkzeug import serving
from werkzeug._internal import _log


class RequestLogHandler(serving.WSGIRequestHandler):
    def log(self, type, message, *args):
        # https://www.reddit.com/r/learnpython/comments/282y58/how_to_change_terminal_output_format_in_flask/
        # args = ('GET /client/O3454WOX/ HTTP/1.1', '200', '-')
        _log(type, "address={}|method={}|path={}|status_code={}".format(
            self.address_string(), self.command, self.path, args[1]))

app = flask.Flask(__name__)

if __name__ == "__main__":
    app.run(debug = True, request_handler = LimitLogHandler)

flask_prefix_url.py

# source: https://stackoverflow.com/a/18969161
################# blueprint.py
bp = Blueprint('burritos', __name__,
                        template_folder='templates')

@bp.route("/")
def index_page():
  return "This is a website about burritos"

@bp.route("/about")
def about_page():
  return "This is a website about burritos"

################ main.py

app = Flask(__name__)
app.register_blueprint(bp, url_prefix='/abc/123')

flask_request.py

# source: https://stackoverflow.com/a/3760309
request.remote_addr  # Get the ip originator

flask_resources.md

Token-based Authentication

• Token-Based Authentication With Flask ***
• JWT intro

Passwords

• Flask-Bcrypt