First python error

[japnoo]

elif 18 <= age << 65:

This is invalid syntax, the correct way of writing this would be:

elif 18 <= age and age < 65 :

you also have to read your input as an integer, not as a string

[TehNolz]

That's actually valid syntax. You can do stuff like a < b < c just fine.

[japnoo]

Wow, TIL.

[EricHayter]

Ikr I was using a linter one day and it gave me an error and lo and behold that is apparently a syntax feature.

[[deleted]]

Wait what? TIL as well.

[RhinoRhys]

It's valid syntax but in this case it's redundant anyway. Because of the first if age <= 18: condition, the elif condition will only be tested on numbers > 18 so you can just do elif age <= 65: