What does 'pass' return in python?

pass.py

# if pass returns it returns <NoneType> !None <str>, Explained: https://stackoverflow.com/a/36622862/851056
def f():
    pass

def g(x):
    if x > 2:
        return x

def h():
    return None


''' Usage '''

f() # None
g(3) # 3 -> we explicitely say `return x`
g(1) # None -> no return specified for that path
h() # None -> we explicitely say `return None`