circuitpython/tests/micropython/const.py

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# test constant optimisation
# This test will only work when MICROPY_COMP_CONST is enabled.
from micropython import const
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"))