circuitpython/tests/micropython/const.py

# test constant optimisation

X = const(123)
Y = const(X + 456)

print(X, Y + 1)

def f():
    print(X, Y + 1)

f()

_X = const(12)
_Y = const(_X + 34)

print(_X, _Y)

class A:
    Z = const(1)
    _Z = const(2)
    print(Z, _Z)

print(hasattr(A, 'Z'), hasattr(A, '_Z'))