TypeError: x missing 1 required positional argument: y

def f():
    x = 1

f()
print(x)
NameError: name x is not defined

def f():
    return 1

x = f()
x
1

def f():
    x = 1
    return x

f()
x
# NameError!

x = f()
x
1

def test_code():
    latLng = {}

test_code()
latLng = latLng
#NameError!

def test_code():
    latLng = {}
    ...
    return latLng

latLng = test_code()
latLng = latLng
# no error