micropython/tests/basics/subclass_native_buffer.py

# test when we subclass a type with the buffer protocol

class my_bytes(bytes):
    pass

b1 = my_bytes([0, 1])
b2 = my_bytes([2, 3])
b3 = bytes([4, 5])

# addition will use the buffer protocol on the RHS
print(b1 + b2)
print(b1 + b3)
print(b3 + b1)

# bytes construction will use the buffer protocol
print(bytes(b1))
py: Allow subclass of native object to delegate to the native buffer_p. Addresses issue #1109. 2015-02-09 15:08:00 +00:00			`# test when we subclass a type with the buffer protocol`

			`class my_bytes(bytes):`
			`pass`

			`b1 = my_bytes([0, 1])`
			`b2 = my_bytes([2, 3])`
			`b3 = bytes([4, 5])`

			`# addition will use the buffer protocol on the RHS`
			`print(b1 + b2)`
			`print(b1 + b3)`
			`print(b3 + b1)`

tests/basics: Use bytes not bytearray when checking user buffer proto. Using bytes will test the same path for the buffer protocol in py/objtype.c. 2019-10-29 10:25:38 +00:00			`# bytes construction will use the buffer protocol`
			`print(bytes(b1))`