Is my annotations are correct ? What is correct way or syntax to create annotations in functions ?

Question

# This is my first annotation code in python.
#I don't know completely how to put annotation in function.

def f(ham_or_spam: str, eggs: list=[]) -> int:
print("Annotations:", f.__annotations__)
if ham_or_spam == 'spam' and eggs:
return 'This is a spam'
elif ham_or_spam == 'ham' and eggs:
return 'This is a ham'
else:
return 'This is not a ' + ham_or_spam
print(f('spam',True))
print(f('spam'))

Answer 1

I'm not quite sure what this function is about, but it seems to return a string, so shouldn't it be "-> str"?