circuitpython/tests/micropython/viper_subscr.py

# test standard Python subscr using viper types


@micropython.viper
def get(dest, i: int):
    i += 1
    return dest[i]


@micropython.viper
def set(dest, i: int, val: int):
    i += 1
    dest[i] = val + 1


ar = [i for i in range(3)]

for i in range(len(ar)):
    set(ar, i - 1, i)
print(ar)

for i in range(len(ar)):
    print(get(ar, i - 1))