Python 3.9 new featues

 def function(numbers:list[int]) -> None:#hinting data type

for x in numbers:

print(x)

t=[x*x for x in range(10)]

function(t)

s="Hello world"

print(s)

print(s.removeprefix("Hello").strip())

print(s.removesuffix("world").strip())

x={'x':3,'y':7,'t':6,'n':8}

y={'x':4,'m':5,'u':0,'n':6}

l=x|y

print(x)

print(y)

print(l)