from _testbuffer import objview
from array import array
def showmem(m):
    for attr in ['obj', 'nbytes', 'readonly', 'itemsize', 'format', 'ndim',
                 'shape', 'strides', 'suboffsets',
                 "c_contiguous", "f_contiguous", "contiguous",]:
        print("%s = %r" % (attr, getattr(m, attr)))
    print("tobytes() -> %r" %  m.tobytes())
    if m.format == 'B':
        print("tolist() -> %r" % m.tolist())
    print()
t = (
    b'abc',
    b'def',
    b'ghi',
    )
m = objview((t, t))
showmem(m)
"""
format = 'B'
itemsize = 1
nbytes = 9
ndim = 2
readonly = True
shape = (3, 3)
strides = (8, 1)
suboffsets = (48, -1)
tobytes() -> b'abcdefghi'
tolist() -> [[97, 98, 99], [100, 101, 102], [103, 104, 105]]
"""

tt = (t, t)
m = objview(tt)
showmem(m)
"""
format = 'B'
itemsize = 1
nbytes = 18
ndim = 3
readonly = True
shape = (2, 3, 3)
strides = (8, 8, 1)
suboffsets = (40, 48, -1)
tobytes() -> b'abcdefghiabcdefghi'
tolist() -> [[[97, 98, 99], [100, 101, 102], [103, 104, 105]], [[97, 98, 99], [100, 101, 102], [103, 104, 105]]]
"""
t = (
    array('B', b'abc'),
    array('B', b'def'),
    array('B', b'ghi'),
    )

m = objview(t)
showmem(m)
"""
format = 'B'
itemsize = 1
nbytes = 9
ndim = 3
readonly = False
shape = (3, 1, 3)
strides = (8, 8, 1)
suboffsets = (40, 0, -1)
tobytes() -> b'abcdefghi'
tolist() -> [[[97, 98, 99]], [[100, 101, 102]], [[103, 104, 105]]]
"""

tt = (t, t)
m = objview(tt)
showmem(m)
"""
format = 'B'
itemsize = 1
nbytes = 18
ndim = 4
readonly = False
shape = (2, 3, 1, 3)
strides = (8, 8, 8, 1)
suboffsets = (40, 40, 0, -1)
tobytes() -> b'abcdefghiabcdefghi'
tolist() ->-> [[[[97, 98, 99]], [[100, 101, 102]], [[103, 104, 105]]], [[[97, 98, 99]], [[100, 101, 102]], [[103, 104, 105]]]]
"""