circuitpython/tests/basics/bytearray1.py

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print(bytearray(4))
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a = bytearray([1, 2, 200])
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print(type(a))
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print(a[0], a[2])
print(a[-1])
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print(a)
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a[2] = 255
print(a[-1])
a.append(10)
print(len(a))
s = 0
for i in a:
s += i
print(s)
print(a[1:])
print(a[:-1])
print(a[2:3])