Syntax error

Question

Can someone explain why the <= is invalid in the following code:
year = int(input("enter birth year"))
if year >= 1983 and <= 2000:
print("You're a millenial'")
else:
print("Oldie but goodie")

Answer 1

if year >= 1983 and year <= 2000:
or
if 1983 <= year <= 2000:

Answer 2

Mert Yazıcı Thanks for mentioning both; I totally didn't realize the comparisons / inequality tests could be chained like that.
ref: https://docs.python.org/3/reference/expressions.html#comparisons
"Comparisons can be chained arbitrarily..."

Answer 3

Ah rookie mistake, thanks Mert Yazici!