How do I make a 404 page in Flask?

[RedCoder]

Question:
I’d like to know how to create a custom 404 page while using Flask.

[Olivbon]

Maybe try coding a 404 page in html then transfer the code into flask

[JacobMcPherson1]

i dont know much about web dev but you could probably just make a custom html 404 page, and then whenever you encounter a 404 error in the backend you just redirect to that page.

[CoderElijah]

Add this to your code:

@app.errorhandler(404)
def _404(e):
  return f"<h1>{e}</h1>"
  # "e" is actually the complete 404 error message
  # You can use render_template and stuff too

[NateDhaliwal]

@RedCoder What is the purpose of a custom 404 page?

[QwertyQwerty88]

So you don’t blind your users with light mode.

Fr though, you may want to link them back to the home page or something.

[QwertyQwerty88]

If your user goes to a page that doesn’t exist, you’ll want them to just be a click away from being able to go back to the home page.

Or if you’re confused about my joke at the beginning, default error pages on flask have a “blinding” white background.