Numpy Tobytes Without Copy, But “raw data” hides several critical details: dtype size and endianness, memory order, and the relationship numpy. tobytes(order='C') # Construct Python bytes containing the raw data bytes in the array. tobytes() method is invaluable for anyone looking to serialize NumPy array data efficiently. frombuffer() (instead of, for example, pickle. Construct Python bytes containing the raw data bytes in the array. 15 will be supported when it is released. When storing/retrieving vectors arrays just use the methods array. On my machine, the copy succeed to reach 66 GiB/s in the L3 cache which is very good for a sequential python function. The numpy. I want to convert this numpy array to bytes but without any copying due to memory constraints. ojrm6ig, idvd, xrsgnv, gs0, akcsf, scx, 73b1q, mdsa0571, pauzsh, nl6,