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# test bytearray + bytearray
b = bytearray(2)
b[0] = 1
b[1] = 2
print(b + bytearray(2))
# inplace add
b += bytearray(3)
print(b)
# extend
b.extend(bytearray(4))
print(b)
# this inplace add tests the code when the buffer doesn't need to be increased
b = bytearray()
b += b""
# extend a bytearray from itself
b = bytearray(b"abcdefgh")
for _ in range(4):
c = bytearray(b) # extra allocation, as above
b.extend(b)
print(b)
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