How to recover bytes function?

[satishmlmlml]

file = open('data.bin', 'rb')
bytes = file.read()
bytes
b'\x00\x00\x00\x02spam\x00\x03?\x9d\xf3\xb6'
records = [bytes([char] * 8) for char in b'spam']
TypeError: 'bytes' object is not callable

How to recover bytes function?
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