memoryview.tobytes

Return the data in the buffer as a byte string.

Order can be {'C', 'F', 'A'}.  When order is 'C' or 'F', the data of
the original array is converted to C or Fortran order.  For
contiguous views, 'A' returns an exact copy of the physical memory.
In particular, in-memory Fortran order is preserved.  For
non-contiguous views, the data is converted to C first.  order=None
is the same as order='C'.