memoryview

builtins

class

memoryview(object)

Create a new memoryview object which references the given object.

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Changed in 3.3, 3.4, 3.5, 3.12, 3.14

3.3: One-dimensional memoryviews can now be sliced. One-dimensional memoryviews with formats ‘B’, ‘b’ or ‘c’ are now hashable.
3.4: memoryview is now registered automatically with collections.abc.Sequence
3.5: memoryviews can now be indexed with a tuple of integers.
3.12: If view.ndim == 0, len(view) now raises TypeError instead of returning 1.
3.14: memoryview is now a generic type.

Members of memoryview

_

__eq__: Return self==value.

c

c_contiguous: A bool indicating whether the memory is C contiguous.
cast: Cast a memoryview to a new format or shape.
contiguous: A bool indicating whether the memory is contiguous.
count: Count the number of occurrences of a value.

f

f_contiguous: A bool indicating whether the memory is Fortran contiguous.
format: A string containing the format (in struct module style) for each element in the view.

h

hex: Return the data in the buffer as a str of hexadecimal numbers.

i

index: Return the index of the first occurrence of a value.
itemsize: The size in bytes of each element of the memoryview.

n

nbytes: The amount of space in bytes that the array would use in a contiguous representation.
ndim: An integer indicating how many dimensions of a multi-dimensional array the memory represents.

o

obj: The underlying object of the memoryview.

r

readonly: A bool indicating whether the memory is read only.
release: Release the underlying buffer exposed by the memoryview object.

s

shape: A tuple of ndim integers giving the shape of the memory as an N-dimensional array.
strides: A tuple of ndim integers giving the size in bytes to access each element for each dimension of the array.
suboffsets: A tuple of integers used internally for PIL-style arrays.

t

tobytes: Return the data in the buffer as a byte string.
tolist: Return the data in the buffer as a list of elements.
toreadonly: Return a readonly version of the memoryview.