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Set up:

    >>> import sys
    >>> from io import BytesIO
    >>> from numpy.lib import format
    >>>
    >>> scalars = [
    ...     np.uint8,
    ...     np.int8,
    ...     np.uint16,
    ...     np.int16,
    ...     np.uint32,
    ...     np.int32,
    ...     np.uint64,
    ...     np.int64,
    ...     np.float32,
    ...     np.float64,
    ...     np.complex64,
    ...     np.complex128,
    ...     object,
    ... ]
    >>>
    >>> basic_arrays = []
    >>>
    >>> for scalar in scalars:
    ...     for endian in '<>':
    ...         dtype = np.dtype(scalar).newbyteorder(endian)
    ...         basic = np.arange(15).astype(dtype)
    ...         basic_arrays.extend([
    ...             np.array([], dtype=dtype),
    ...             np.array(10, dtype=dtype),
    ...             basic,
    ...             basic.reshape((3,5)),
    ...             basic.reshape((3,5)).T,
    ...             basic.reshape((3,5))[::-1,::2],
    ...         ])
    ...
    >>>
    >>> Pdescr = [
    ...     ('x', 'i4', (2,)),
    ...     ('y', 'f8', (2, 2)),
    ...     ('z', 'u1')]
    >>>
    >>>
    >>> PbufferT = [
    ...     ([3,2], [[6.,4.],[6.,4.]], 8),
    ...     ([4,3], [[7.,5.],[7.,5.]], 9),
    ...     ]
    >>>
    >>>
    >>> Ndescr = [
    ...     ('x', 'i4', (2,)),
    ...     ('Info', [
    ...         ('value', 'c16'),
    ...         ('y2', 'f8'),
    ...         ('Info2', [
    ...             ('name', 'S2'),
    ...             ('value', 'c16', (2,)),
    ...             ('y3', 'f8', (2,)),
    ...             ('z3', 'u4', (2,))]),
    ...         ('name', 'S2'),
    ...         ('z2', 'b1')]),
    ...     ('color', 'S2'),
    ...     ('info', [
    ...         ('Name', 'U8'),
    ...         ('Value', 'c16')]),
    ...     ('y', 'f8', (2, 2)),
    ...     ('z', 'u1')]
    >>>
    >>>
    >>> NbufferT = [
    ...     ([3,2], (6j, 6., ('nn', [6j,4j], [6.,4.], [1,2]), 'NN', True), 'cc', ('NN', 6j), [[6.,4.],[6.,4.]], 8),
    ...     ([4,3], (7j, 7., ('oo', [7j,5j], [7.,5.], [2,1]), 'OO', False), 'dd', ('OO', 7j), [[7.,5.],[7.,5.]], 9),
    ...     ]
    >>>
    >>>
    >>> record_arrays = [
    ...     np.array(PbufferT, dtype=np.dtype(Pdescr).newbyteorder('<')),
    ...     np.array(NbufferT, dtype=np.dtype(Ndescr).newbyteorder('<')),
    ...     np.array(PbufferT, dtype=np.dtype(Pdescr).newbyteorder('>')),
    ...     np.array(NbufferT, dtype=np.dtype(Ndescr).newbyteorder('>')),
    ... ]

Test the magic string writing.

    >>> format.magic(1, 0)
    '\x93NUMPY\x01\x00'
    >>> format.magic(0, 0)
    '\x93NUMPY\x00\x00'
    >>> format.magic(255, 255)
    '\x93NUMPY\xff\xff'
    >>> format.magic(2, 5)
    '\x93NUMPY\x02\x05'

Test the magic string reading.

    >>> format.read_magic(BytesIO(format.magic(1, 0)))
    (1, 0)
    >>> format.read_magic(BytesIO(format.magic(0, 0)))
    (0, 0)
    >>> format.read_magic(BytesIO(format.magic(255, 255)))
    (255, 255)
    >>> format.read_magic(BytesIO(format.magic(2, 5)))
    (2, 5)

Test the header writing.

    >>> for arr in basic_arrays + record_arrays:
    ...     f = BytesIO()
    ...     format.write_array_header_1_0(f, arr)   # XXX: arr is not a dict, items gets called on it
    ...     print(repr(f.getvalue()))
    ...
    "F\x00{'descr': '|u1', 'fortran_order': False, 'shape': (0,)}              \n"
    "F\x00{'descr': '|u1', 'fortran_order': False, 'shape': ()}                \n"
    "F\x00{'descr': '|u1', 'fortran_order': False, 'shape': (15,)}             \n"
    "F\x00{'descr': '|u1', 'fortran_order': False, 'shape': (3, 5)}            \n"
    "F\x00{'descr': '|u1', 'fortran_order': True, 'shape': (5, 3)}             \n"
    "F\x00{'descr': '|u1', 'fortran_order': False, 'shape': (3, 3)}            \n"
    "F\x00{'descr': '|u1', 'fortran_order': False, 'shape': (0,)}              \n"
    "F\x00{'descr': '|u1', 'fortran_order': False, 'shape': ()}                \n"
    "F\x00{'descr': '|u1', 'fortran_order': False, 'shape': (15,)}             \n"
    "F\x00{'descr': '|u1', 'fortran_order': False, 'shape': (3, 5)}            \n"
    "F\x00{'descr': '|u1', 'fortran_order': True, 'shape': (5, 3)}             \n"
    "F\x00{'descr': '|u1', 'fortran_order': False, 'shape': (3, 3)}            \n"
    "F\x00{'descr': '|i1', 'fortran_order': False, 'shape': (0,)}              \n"
    "F\x00{'descr': '|i1', 'fortran_order': False, 'shape': ()}                \n"
    "F\x00{'descr': '|i1', 'fortran_order': False, 'shape': (15,)}             \n"
    "F\x00{'descr': '|i1', 'fortran_order': False, 'shape': (3, 5)}            \n"
    "F\x00{'descr': '|i1', 'fortran_order': True, 'shape': (5, 3)}             \n"
    "F\x00{'descr': '|i1', 'fortran_order': False, 'shape': (3, 3)}            \n"
    "F\x00{'descr': '|i1', 'fortran_order': False, 'shape': (0,)}              \n"
    "F\x00{'descr': '|i1', 'fortran_order': False, 'shape': ()}                \n"
    "F\x00{'descr': '|i1', 'fortran_order': False, 'shape': (15,)}             \n"
    "F\x00{'descr': '|i1', 'fortran_order': False, 'shape': (3, 5)}            \n"
    "F\x00{'descr': '|i1', 'fortran_order': True, 'shape': (5, 3)}             \n"
    "F\x00{'descr': '|i1', 'fortran_order': False, 'shape': (3, 3)}            \n"
    "F\x00{'descr': '<u2', 'fortran_order': False, 'shape': (0,)}              \n"
    "F\x00{'descr': '<u2', 'fortran_order': False, 'shape': ()}                \n"
    "F\x00{'descr': '<u2', 'fortran_order': False, 'shape': (15,)}             \n"
    "F\x00{'descr': '<u2', 'fortran_order': False, 'shape': (3, 5)}            \n"
    "F\x00{'descr': '<u2', 'fortran_order': True, 'shape': (5, 3)}             \n"
    "F\x00{'descr': '<u2', 'fortran_order': False, 'shape': (3, 3)}            \n"
    "F\x00{'descr': '>u2', 'fortran_order': False, 'shape': (0,)}              \n"
    "F\x00{'descr': '>u2', 'fortran_order': False, 'shape': ()}                \n"
    "F\x00{'descr': '>u2', 'fortran_order': False, 'shape': (15,)}             \n"
    "F\x00{'descr': '>u2', 'fortran_order': False, 'shape': (3, 5)}            \n"
    "F\x00{'descr': '>u2', 'fortran_order': True, 'shape': (5, 3)}             \n"
    "F\x00{'descr': '>u2', 'fortran_order': False, 'shape': (3, 3)}            \n"
    "F\x00{'descr': '<i2', 'fortran_order': False, 'shape': (0,)}              \n"
    "F\x00{'descr': '<i2', 'fortran_order': False, 'shape': ()}                \n"
    "F\x00{'descr': '<i2', 'fortran_order': False, 'shape': (15,)}             \n"
    "F\x00{'descr': '<i2', 'fortran_order': False, 'shape': (3, 5)}            \n"
    "F\x00{'descr': '<i2', 'fortran_order': True, 'shape': (5, 3)}             \n"
    "F\x00{'descr': '<i2', 'fortran_order': False, 'shape': (3, 3)}            \n"
    "F\x00{'descr': '>i2', 'fortran_order': False, 'shape': (0,)}              \n"
    "F\x00{'descr': '>i2', 'fortran_order': False, 'shape': ()}                \n"
    "F\x00{'descr': '>i2', 'fortran_order': False, 'shape': (15,)}             \n"
    "F\x00{'descr': '>i2', 'fortran_order': False, 'shape': (3, 5)}            \n"
    "F\x00{'descr': '>i2', 'fortran_order': True, 'shape': (5, 3)}             \n"
    "F\x00{'descr': '>i2', 'fortran_order': False, 'shape': (3, 3)}            \n"
    "F\x00{'descr': '<u4', 'fortran_order': False, 'shape': (0,)}              \n"
    "F\x00{'descr': '<u4', 'fortran_order': False, 'shape': ()}                \n"
    "F\x00{'descr': '<u4', 'fortran_order': False, 'shape': (15,)}             \n"
    "F\x00{'descr': '<u4', 'fortran_order': False, 'shape': (3, 5)}            \n"
    "F\x00{'descr': '<u4', 'fortran_order': True, 'shape': (5, 3)}             \n"
    "F\x00{'descr': '<u4', 'fortran_order': False, 'shape': (3, 3)}            \n"
    "F\x00{'descr': '>u4', 'fortran_order': False, 'shape': (0,)}              \n"
    "F\x00{'descr': '>u4', 'fortran_order': False, 'shape': ()}                \n"
    "F\x00{'descr': '>u4', 'fortran_order': False, 'shape': (15,)}             \n"
    "F\x00{'descr': '>u4', 'fortran_order': False, 'shape': (3, 5)}            \n"
    "F\x00{'descr': '>u4', 'fortran_order': True, 'shape': (5, 3)}             \n"
    "F\x00{'descr': '>u4', 'fortran_order': False, 'shape': (3, 3)}            \n"
    "F\x00{'descr': '<i4', 'fortran_order': False, 'shape': (0,)}              \n"
    "F\x00{'descr': '<i4', 'fortran_order': False, 'shape': ()}                \n"
    "F\x00{'descr': '<i4', 'fortran_order': False, 'shape': (15,)}             \n"
    "F\x00{'descr': '<i4', 'fortran_order': False, 'shape': (3, 5)}            \n"
    "F\x00{'descr': '<i4', 'fortran_order': True, 'shape': (5, 3)}             \n"
    "F\x00{'descr': '<i4', 'fortran_order': False, 'shape': (3, 3)}            \n"
    "F\x00{'descr': '>i4', 'fortran_order': False, 'shape': (0,)}              \n"
    "F\x00{'descr': '>i4', 'fortran_order': False, 'shape': ()}                \n"
    "F\x00{'descr': '>i4', 'fortran_order': False, 'shape': (15,)}             \n"
    "F\x00{'descr': '>i4', 'fortran_order': False, 'shape': (3, 5)}            \n"
    "F\x00{'descr': '>i4', 'fortran_order': True, 'shape': (5, 3)}             \n"
    "F\x00{'descr': '>i4', 'fortran_order': False, 'shape': (3, 3)}            \n"
    "F\x00{'descr': '<u8', 'fortran_order': False, 'shape': (0,)}              \n"
    "F\x00{'descr': '<u8', 'fortran_order': False, 'shape': ()}                \n"
    "F\x00{'descr': '<u8', 'fortran_order': False, 'shape': (15,)}             \n"
    "F\x00{'descr': '<u8', 'fortran_order': False, 'shape': (3, 5)}            \n"
    "F\x00{'descr': '<u8', 'fortran_order': True, 'shape': (5, 3)}             \n"
    "F\x00{'descr': '<u8', 'fortran_order': False, 'shape': (3, 3)}            \n"
    "F\x00{'descr': '>u8', 'fortran_order': False, 'shape': (0,)}              \n"
    "F\x00{'descr': '>u8', 'fortran_order': False, 'shape': ()}                \n"
    "F\x00{'descr': '>u8', 'fortran_order': False, 'shape': (15,)}             \n"
    "F\x00{'descr': '>u8', 'fortran_order': False, 'shape': (3, 5)}            \n"
    "F\x00{'descr': '>u8', 'fortran_order': True, 'shape': (5, 3)}             \n"
    "F\x00{'descr': '>u8', 'fortran_order': False, 'shape': (3, 3)}            \n"
    "F\x00{'descr': '<i8', 'fortran_order': False, 'shape': (0,)}              \n"
    "F\x00{'descr': '<i8', 'fortran_order': False, 'shape': ()}                \n"
    "F\x00{'descr': '<i8', 'fortran_order': False, 'shape': (15,)}             \n"
    "F\x00{'descr': '<i8', 'fortran_order': False, 'shape': (3, 5)}            \n"
    "F\x00{'descr': '<i8', 'fortran_order': True, 'shape': (5, 3)}             \n"
    "F\x00{'descr': '<i8', 'fortran_order': False, 'shape': (3, 3)}            \n"
    "F\x00{'descr': '>i8', 'fortran_order': False, 'shape': (0,)}              \n"
    "F\x00{'descr': '>i8', 'fortran_order': False, 'shape': ()}                \n"
    "F\x00{'descr': '>i8', 'fortran_order': False, 'shape': (15,)}             \n"
    "F\x00{'descr': '>i8', 'fortran_order': False, 'shape': (3, 5)}            \n"
    "F\x00{'descr': '>i8', 'fortran_order': True, 'shape': (5, 3)}             \n"
    "F\x00{'descr': '>i8', 'fortran_order': False, 'shape': (3, 3)}            \n"
    "F\x00{'descr': '<f4', 'fortran_order': False, 'shape': (0,)}              \n"
    "F\x00{'descr': '<f4', 'fortran_order': False, 'shape': ()}                \n"
    "F\x00{'descr': '<f4', 'fortran_order': False, 'shape': (15,)}             \n"
    "F\x00{'descr': '<f4', 'fortran_order': False, 'shape': (3, 5)}            \n"
    "F\x00{'descr': '<f4', 'fortran_order': True, 'shape': (5, 3)}             \n"
    "F\x00{'descr': '<f4', 'fortran_order': False, 'shape': (3, 3)}            \n"
    "F\x00{'descr': '>f4', 'fortran_order': False, 'shape': (0,)}              \n"
    "F\x00{'descr': '>f4', 'fortran_order': False, 'shape': ()}                \n"
    "F\x00{'descr': '>f4', 'fortran_order': False, 'shape': (15,)}             \n"
    "F\x00{'descr': '>f4', 'fortran_order': False, 'shape': (3, 5)}            \n"
    "F\x00{'descr': '>f4', 'fortran_order': True, 'shape': (5, 3)}             \n"
    "F\x00{'descr': '>f4', 'fortran_order': False, 'shape': (3, 3)}            \n"
    "F\x00{'descr': '<f8', 'fortran_order': False, 'shape': (0,)}              \n"
    "F\x00{'descr': '<f8', 'fortran_order': False, 'shape': ()}                \n"
    "F\x00{'descr': '<f8', 'fortran_order': False, 'shape': (15,)}             \n"
    "F\x00{'descr': '<f8', 'fortran_order': False, 'shape': (3, 5)}            \n"
    "F\x00{'descr': '<f8', 'fortran_order': True, 'shape': (5, 3)}             \n"
    "F\x00{'descr': '<f8', 'fortran_order': False, 'shape': (3, 3)}            \n"
    "F\x00{'descr': '>f8', 'fortran_order': False, 'shape': (0,)}              \n"
    "F\x00{'descr': '>f8', 'fortran_order': False, 'shape': ()}                \n"
    "F\x00{'descr': '>f8', 'fortran_order': False, 'shape': (15,)}             \n"
    "F\x00{'descr': '>f8', 'fortran_order': False, 'shape': (3, 5)}            \n"
    "F\x00{'descr': '>f8', 'fortran_order': True, 'shape': (5, 3)}             \n"
    "F\x00{'descr': '>f8', 'fortran_order': False, 'shape': (3, 3)}            \n"
    "F\x00{'descr': '<c8', 'fortran_order': False, 'shape': (0,)}              \n"
    "F\x00{'descr': '<c8', 'fortran_order': False, 'shape': ()}                \n"
    "F\x00{'descr': '<c8', 'fortran_order': False, 'shape': (15,)}             \n"
    "F\x00{'descr': '<c8', 'fortran_order': False, 'shape': (3, 5)}            \n"
    "F\x00{'descr': '<c8', 'fortran_order': True, 'shape': (5, 3)}             \n"
    "F\x00{'descr': '<c8', 'fortran_order': False, 'shape': (3, 3)}            \n"
    "F\x00{'descr': '>c8', 'fortran_order': False, 'shape': (0,)}              \n"
    "F\x00{'descr': '>c8', 'fortran_order': False, 'shape': ()}                \n"
    "F\x00{'descr': '>c8', 'fortran_order': False, 'shape': (15,)}             \n"
    "F\x00{'descr': '>c8', 'fortran_order': False, 'shape': (3, 5)}            \n"
    "F\x00{'descr': '>c8', 'fortran_order': True, 'shape': (5, 3)}             \n"
    "F\x00{'descr': '>c8', 'fortran_order': False, 'shape': (3, 3)}            \n"
    "F\x00{'descr': '<c16', 'fortran_order': False, 'shape': (0,)}             \n"
    "F\x00{'descr': '<c16', 'fortran_order': False, 'shape': ()}               \n"
    "F\x00{'descr': '<c16', 'fortran_order': False, 'shape': (15,)}            \n"
    "F\x00{'descr': '<c16', 'fortran_order': False, 'shape': (3, 5)}           \n"
    "F\x00{'descr': '<c16', 'fortran_order': True, 'shape': (5, 3)}            \n"
    "F\x00{'descr': '<c16', 'fortran_order': False, 'shape': (3, 3)}           \n"
    "F\x00{'descr': '>c16', 'fortran_order': False, 'shape': (0,)}             \n"
    "F\x00{'descr': '>c16', 'fortran_order': False, 'shape': ()}               \n"
    "F\x00{'descr': '>c16', 'fortran_order': False, 'shape': (15,)}            \n"
    "F\x00{'descr': '>c16', 'fortran_order': False, 'shape': (3, 5)}           \n"
    "F\x00{'descr': '>c16', 'fortran_order': True, 'shape': (5, 3)}            \n"
    "F\x00{'descr': '>c16', 'fortran_order': False, 'shape': (3, 3)}           \n"
    "F\x00{'descr': 'O', 'fortran_order': False, 'shape': (0,)}              \n"
    "F\x00{'descr': 'O', 'fortran_order': False, 'shape': ()}                \n"
    "F\x00{'descr': 'O', 'fortran_order': False, 'shape': (15,)}             \n"
    "F\x00{'descr': 'O', 'fortran_order': False, 'shape': (3, 5)}            \n"
    "F\x00{'descr': 'O', 'fortran_order': True, 'shape': (5, 3)}             \n"
    "F\x00{'descr': 'O', 'fortran_order': False, 'shape': (3, 3)}            \n"
    "F\x00{'descr': 'O', 'fortran_order': False, 'shape': (0,)}              \n"
    "F\x00{'descr': 'O', 'fortran_order': False, 'shape': ()}                \n"
    "F\x00{'descr': 'O', 'fortran_order': False, 'shape': (15,)}             \n"
    "F\x00{'descr': 'O', 'fortran_order': False, 'shape': (3, 5)}            \n"
    "F\x00{'descr': 'O', 'fortran_order': True, 'shape': (5, 3)}             \n"
    "F\x00{'descr': 'O', 'fortran_order': False, 'shape': (3, 3)}            \n"
    "v\x00{'descr': [('x', '<i4', (2,)), ('y', '<f8', (2, 2)), ('z', '|u1')],\n 'fortran_order': False,\n 'shape': (2,)}         \n"
    "\x16\x02{'descr': [('x', '<i4', (2,)),\n           ('Info',\n            [('value', '<c16'),\n             ('y2', '<f8'),\n             ('Info2',\n              [('name', '|S2'),\n               ('value', '<c16', (2,)),\n               ('y3', '<f8', (2,)),\n               ('z3', '<u4', (2,))]),\n             ('name', '|S2'),\n             ('z2', '|b1')]),\n           ('color', '|S2'),\n           ('info', [('Name', '<U8'), ('Value', '<c16')]),\n           ('y', '<f8', (2, 2)),\n           ('z', '|u1')],\n 'fortran_order': False,\n 'shape': (2,)}      \n"
    "v\x00{'descr': [('x', '>i4', (2,)), ('y', '>f8', (2, 2)), ('z', '|u1')],\n 'fortran_order': False,\n 'shape': (2,)}         \n"
    "\x16\x02{'descr': [('x', '>i4', (2,)),\n           ('Info',\n            [('value', '>c16'),\n             ('y2', '>f8'),\n             ('Info2',\n              [('name', '|S2'),\n               ('value', '>c16', (2,)),\n               ('y3', '>f8', (2,)),\n               ('z3', '>u4', (2,))]),\n             ('name', '|S2'),\n             ('z2', '|b1')]),\n           ('color', '|S2'),\n           ('info', [('Name', '>U8'), ('Value', '>c16')]),\n           ('y', '>f8', (2, 2)),\n           ('z', '|u1')],\n 'fortran_order': False,\n 'shape': (2,)}      \n"
é    N)ÚBytesIO)Úassert_Úassert_array_equalÚassert_raisesÚassert_raises_regexÚassert_warnsÚIS_PYPYÚIS_WASM)Úrequires_memory)Úformatz<>iÜ  ©Údtypeé
   )é   é2   éÿÿÿÿé   )©ÚxÚi4©r   ©ÚyÚf8©r   r   ©ÚzÚu1é   g      @g      @é   é   g      @g      @é	   r   ZInfo)ÚvalueÚc16)Úy2r   ZInfo2)©ÚnameÚS2)r"   r#   r   )Zy3r   r   )Zz3Zu4r   r%   )Zz2Úb1)Úcolorr'   Úinfo)ÚNameZU8)ÚValuer#   r   r   ù              @Únny              @é   ÚNNTÚcc)r0   r-   ù              @Zooy              @ÚOOFÚdd)r3   r2   ú<ú>)Úc©z<f8©é   r   c                       s   e Zd Zd‡ fdd„	Z‡  ZS )ÚBytesIOSRandomSizeNc                    s    dd l }| d|¡}tƒ  |¡S )Nr   r/   )ÚrandomÚrandintÚsuperÚread)ÚselfÚsizer<   ©Ú	__class__© úFC:\wamp64\www\opt\env\Lib\site-packages\numpy/lib/tests/test_format.pyr?   ‘  s   zBytesIOSRandomSize.read©N)Ú__name__Ú
__module__Ú__qualname__r?   Ú__classcell__rD   rD   rB   rE   r;     s    r;   c                 C   s0   t ƒ }t || ¡ t | ¡ ƒ}tj|dd}|S )NT©Úallow_pickle©r   r   Úwrite_arrayÚgetvalueÚ
read_array©ÚarrÚfÚf2Úarr2rD   rD   rE   Ú	roundtrip—  s
   rV   c                 C   s,   t ƒ }t || ¡ t| ¡ ƒ}t |¡}|S rF   )r   r   rN   r;   rO   rP   rQ   rD   rD   rE   Úroundtrip_randsizeŸ  s
   
rW   c                 C   s4   t ƒ }t || ¡ t | ¡ dd… ƒ}t |¡}|S )Nr   r   rM   rQ   rD   rD   rE   Úroundtrip_truncated§  s
   
rX   c                 C   s   t | |kƒ d S rF   )r   )Zo1Úo2rD   rD   rE   Úassert_equal_°  s   rZ   c                  C   s$   t t D ]} t| ƒ}t| |ƒ qd S rF   )Úbasic_arraysÚrecord_arraysrV   r   ©rR   rU   rD   rD   rE   Útest_roundtrip´  s   þr^   c                  C   s.   t t D ]} | jtkrt| ƒ}t| |ƒ qd S rF   )r[   r\   r   ÚobjectrW   r   r]   rD   rD   rE   Útest_roundtrip_randsizeº  s   

€ýr`   c                  C   s$   t D ]} | jtkrttt| ƒ qd S rF   )r[   r   r_   r   Ú
ValueErrorrX   ©rR   rD   rD   rE   Útest_roundtrip_truncatedÁ  s
   
€þrc   c                  C   s4   t jdt  ttjd f¡d} t| ƒ}t| |ƒ d S )Nr/   r   )ÚnpÚonesr   Ústrr   ÚBUFFER_SIZErV   r   )Zlong_str_arrZlong_str_arr2rD   rD   rE   Útest_long_strÇ  s   rh   zmemmap doesn't work correctly)Úreasonc           
   	   C   sD  t tt ƒD ]™\}}|jjrqtj | d|› d¡}tj | d|› d¡}t|dƒ}t	 
||¡ W d   ƒ n1 s;w   Y  |jjoH|jj }t	j|d|j|j|d}||d< | ¡  t|dƒ}| ¡ }W d   ƒ n1 sqw   Y  t|dƒ}| ¡ }	W d   ƒ n1 sŠw   Y  t||	ƒ t	j|d	d
}| ¡  qd S )NÚnormalz.npyZmemmapÚwbúw+)Úmoder   ÚshapeÚfortran_order.ÚrbÚr)rm   )Ú	enumerater[   r\   r   Z	hasobjectÚosÚpathÚjoinÚopenr   rN   ÚflagsÚf_contiguousÚc_contiguousÚopen_memmaprn   Úflushr?   rZ   )
ÚtmpdirÚirR   ZnfnZmfnÚfpro   ÚmaZnormal_bytesZmemmap_bytesrD   rD   rE   Útest_memmap_roundtripÎ  s2   ÿÿÿ
ÿ
ÿ

ær€   c                 C   sj   t j dd¡}tj | d¡}t j||d t  |¡}|d }W d   ƒ n1 s)w   Y  t||ƒ d S )NéÈ   zcompressed.npzrb   rR   )	rd   r<   Zrandrs   rt   ru   Zsavez_compressedÚloadr   )r|   rR   Únpz_fileÚnpzÚarr1rD   rD   rE   Útest_compressed_roundtripî  s   
ÿr†   z
i1, i4, i1)ÚalignÚaÚbr   é   )ÚnamesÚformatsÚoffsetsr7   Úd)r‹   rŒ   )rˆ   Ú r‰   ZaaZbb)r‹   rŒ   r   Útitles)r‹   rŒ   ÚitemsizeÚdtc                 C   s‚   t  d|¡}tdƒD ]}|d ||< q
tj | d¡}t j||d t  |¡}|d }W d   ƒ n1 s5w   Y  t||ƒ d S )Nr   r:   zaligned.npzrb   rR   )	rd   ÚzerosÚrangers   rt   ru   Úsavezr‚   r   )r|   r’   rR   r}   rƒ   r„   r…   rD   rD   rE   Útest_load_padded_dtype  s   
ÿr–   z!Emscripten NODEFS has a buggy dupc                  C   s:   d} t j t j t¡d| ¡}t |¡}t|t d¡ƒ d S )Nzwin64python2.npyÚdatar   )	rs   rt   ru   ÚdirnameÚ__file__rd   r‚   r   re   )Úfnamert   r—   rD   rD   rE   Ú%test_python2_python3_interoperability  s   
r›   c               	   C   s€  t j t j t¡d¡} tjd tddgtd}dD ]¥}t j | |¡}dD ]T}tj	|d|d}| 
d	¡r;|d
 }| ¡  n|}|dkri| d¡ritt|d tƒƒ t|d d… |d d… ƒ t|d  |¡|d ƒ q#tt|d tƒƒ t||ƒ q#| d¡r½| 
d	¡r©tj	|dd}tt|jd
ƒ | ¡  tj	|dddd}tt|jd
ƒ | ¡  qtttj	|dd tttj	|dddd qd S )Nr—   u   å„ªè‰¯s   ä¸è‰¯r   )úpy2-objarr.npyúpy2-objarr.npzzpy3-objarr.npyzpy3-objarr.npz)ÚbytesÚlatin1T©rL   Úencodingz.npzr   rŸ   Úpy2r   r   rK   F)rL   Úfix_importsr¡   )rs   rt   ru   r˜   r™   rd   Úarrayr”   r_   r‚   ÚendswithÚcloseÚ
startswithr   Ú
isinstancerf   r   Úencoderž   r   ÚUnicodeErrorÚ__getitem__ÚImportError)Údata_dirÚexpectedrš   rt   r¡   Zdata_fr—   rD   rD   rE   Útest_pickle_python2_python3  sN   
ÿþ




ÿ

ÿ
þ€ßr¯   c                 C   s¶   t j t j t¡d¡}t j |d¡}tttj|ddd t j |d¡}tj|ddd}tt|j	dƒ W d   ƒ n1 s=w   Y  t j | d¡}tttj
|tjd gtd	dd
 d S )Nr—   rœ   FrŸ   r    r   r   zpickle-disabled.npyr   rK   )rs   rt   ru   r˜   r™   r   ra   rd   r‚   r«   Úsaver¤   r_   )r|   r­   rt   rS   rD   rD   rE   Útest_pickle_disallowH  s   
ÿÿ
ÿr±   )r   r   Úi1)r‹   rŒ   r   r‘   )r    )r   r8   r   r9   c                 C   s8   t  | j¡}t|| ƒ t d| ¡}t|ƒ}t||ƒ d S )Nr   )r   Zdescr_to_dtypeÚdescrrZ   rd   r“   rV   r   )r’   Údt1r…   rU   rD   rD   rE   Útest_descr_to_dtypeW  s
   2
rµ   c                  C   sî   t ƒ } dd„ tdƒD ƒ}tjd|d}tj| |dd tjdd	}t d
dt	¡ t | |¡ t
|d jt	u ƒ W d   ƒ n1 sBw   Y  |  d¡ |  ¡ }t
t|ƒtj dkƒ |  d¡ tj| dd}t||ƒ tttj| |dƒ d S )Nc                 S   ó   g | ]
}d | d t f‘qS ©z%déd   ©Úfloat©Ú.0r}   rD   rD   rE   Ú
<listcomp>’  ó    z$test_version_2_0.<locals>.<listcomp>éô  éè  r   ©r   r   ©ÚversionT©ÚrecordÚalwaysr   r   é@ ©Úmax_header_size©r/   r   )r   r”   rd   re   r   rN   ÚwarningsÚcatch_warningsÚfilterwarningsÚUserWarningr   ÚcategoryÚseekÚreadlineÚlenÚARRAY_ALIGNrP   r   r   ra   )rS   r’   rŽ   ÚwÚheaderÚnrD   rD   rE   Útest_version_2_0  s    ý


r×   c              	   C   s,  dd„ t dƒD ƒ}tjd|d}tj | d¡}tj | d¡}tttj	|d|j
|jd	d
 tj	|d|j
|jdd
}||d< | ¡  tj	|ddd}t||ƒ tjdd,}t ddt¡ tj	|d|j
|jd d
}t|d jtu ƒ ||d< | ¡  W d   ƒ n1 s‚w   Y  tj	|ddd}t||ƒ d S )Nc                 S   r¶   r·   r¹   r»   rD   rD   rE   r½   «  r¾   z+test_version_2_0_memmap.<locals>.<listcomp>r¿   rÀ   r   zversion2_01.npyzversion2_02.npyrl   rÊ   )rm   r   rn   rÃ   rÁ   .rq   rÇ   )rm   rÉ   TrÄ   rÆ   r   r   )r”   rd   re   rs   rt   ru   r   ra   r   rz   r   rn   r{   r   rË   rÌ   rÍ   rÎ   r   rÏ   )r|   r’   rŽ   Ztf1Ztf2r   rÔ   rD   rD   rE   Útest_version_2_0_memmap¨  s2   ÿÿ
ÿ
úrØ   Ú	mmap_moderq   c                 C   s  t j | d¡}tjddd d d}tjtdd t ||¡ W d   ƒ n1 s*w   Y  tj	t
d	d tj||d
 W d   ƒ n1 sHw   Y  tj	t
d	d tj||dd W d   ƒ n1 sgw   Y  tj||dd}t||ƒ tj||dd}t||ƒ d S )Nzlarge_header.npyr/   úi,é'  r}   r   ú.*format 2.0©ÚmatchúHeader.*large)rÙ   é N  )rÙ   rÉ   T)rÙ   rL   é ¿ )rs   rt   ru   rd   r¤   ÚpytestÚwarnsrÎ   r°   Úraisesra   r‚   r   )r|   rÙ   rS   rR   ÚresrD   rD   rE   Útest_huge_headerÇ  s   ÿÿÿ
ræ   c                 C   s  t j | d¡}tjddd d d}tjtdd tj||d	 W d   ƒ n1 s+w   Y  tj	t
d
d t |¡d  W d   ƒ n1 sIw   Y  tj	t
d
d tj|ddd  W d   ƒ n1 siw   Y  tj|ddd }t||ƒ tj|ddd }t||ƒ d S )Nzlarge_header.npzr/   rÚ   rÛ   r}   r   rÜ   rÝ   rb   rß   rR   rà   rÈ   TrK   rá   )rs   rt   ru   rd   r¤   râ   rã   rÎ   r•   rä   ra   r‚   r   )r|   rS   rR   rå   rD   rD   rE   Útest_huge_header_npzÛ  s   ÿÿÿ
rç   c               	   C   s´   t ƒ } t d¡}tj| |dd t | |¡ tj| |d d t | |¡ tj| |dd t | |¡ g d¢}|D ]}ttdƒ tj| ||d W d   ƒ n1 sRw   Y  q8d S )Nr/   rÊ   rÂ   rÁ   ))r/   r/   )r   r   )r   r/   r   )éÿ   rè   z we only support format version.*)r   rd   Úaranger   rN   r   ra   )rS   rR   Zbad_versionsrÃ   rD   rD   rE   Útest_write_versionï  s"   
ÿþ€ÿrê   )s   “NUMPYs   “NUMPY  s   “NUMPY s   “NUMPY s   “NUMPYs   “NUMPYÿÿ)s   ’NUMPY s    NUMPY s   “numpy s   “MATLB s   “NUMPYs   “NUMPYó    c                  C   s¢   t ƒ } t ƒ }tjdtd}tj| |dd tj||dd |  d¡ | d¡ t | ¡}t |¡}t|dkƒ t|dkƒ t|  	¡ tj
kƒ t| 	¡ tj
kƒ d S )N©r   rŠ   r   rÊ   rÂ   rÁ   r   )r   rd   re   rº   r   rN   rÐ   Z
read_magicr   ÚtellÚ	MAGIC_LEN)Ús1Ús2rR   Zversion1Zversion2rD   rD   rE   Útest_read_magic  s   



rñ   c                  C   s$   t D ]} t| ƒ}tttj|ƒ qd S rF   )Úmalformed_magicr   r   ra   r   rP   ©ÚmagicrS   rD   rD   rE   Útest_read_magic_bad_magic1  s   þrõ   c                  C   s(   t t D ]} t| ƒ}tttj|ƒ qd S rF   )Úbad_version_magicrò   r   r   ra   r   rP   ró   rD   rD   rE   Útest_read_version_1_0_bad_magic7  s   þr÷   c                   C   sD   t ttjddƒ t ttjddƒ t ttjddƒ t ttjddƒ d S )Nr   r/   é   )r   ra   r   rô   rD   rD   rD   rE   Útest_bad_magic_args=  s   rù   c                  C   sL   t ƒ } tƒ dddœ}t | |¡ t ƒ } dd dfg|d< tttj| |ƒ d S )NFz<i8©rn   ro   r³   A   xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxrø   r³   )r   Útupler   Úwrite_array_header_1_0r   ra   ©ÚsrŽ   rD   rD   rE   Útest_large_headerD  s   rÿ   c                  C   ór   t ƒ } tjdtd}tj| |dd |  tj¡ t | ¡\}}}t	|  
¡ tj dkƒ t	|||fddtfkƒ d S )Nrì   r   rÊ   rÂ   r   F)r   rd   re   rº   r   rN   rÐ   rî   Úread_array_header_1_0r   rí   rÓ   ©rþ   rR   rn   Úfortranr   rD   rD   rE   Útest_read_array_header_1_0N  ó   r  c                  C   r   )Nrì   r   rÁ   rÂ   r   F)r   rd   re   rº   r   rN   rÐ   rî   Zread_array_header_2_0r   rí   rÓ   r  rD   rD   rE   Útest_read_array_header_2_0[  r  r  c                  C   sˆ   t ƒ } tttj| ƒ t dƒ} tttj| ƒ t dƒ} tttj| ƒ t dƒ} tttj| ƒ dddddœ}t ƒ } t | |¡ tttj| ƒ d S )	Nó   1s    s@   “NUMPY 6 {'descr': 'x', 'shape': (1, 2), }                    
©r/   r   Fr   r   )rn   ro   r³   Zextrakey)r   r   ra   r   r  rü   rý   rD   rD   rE   Útest_bad_headerh  s$   ÿýr	  c                 C   sþ   t jdks
t jdkrt d¡ tj | d¡}zdd l}| ddd|g¡ W n t	y3   t d	¡ Y nw t
|d
ƒ}| d¡ t d¡}t ||¡ W d   ƒ n1 sTw   Y  t
|dƒ}| d¡ t |¡}W d   ƒ n1 ssw   Y  t||ƒ d S )NÚwin32Úcygwinz)Unknown if Windows has sparse filesystemsZsparse_filer   Útruncatez-sZ
5368709120zCould not create 5GB large filerk   l        r:   rp   )ÚsysÚplatformrâ   Úskiprs   rt   ru   Ú
subprocessÚ
check_callÚ	Exceptionrv   rÐ   rd   ré   r°   r‚   r   )r|   Ztf_nameÚsprS   rŽ   rq   rD   rD   rE   Útest_large_file_support…  s&   
ÿ

ý
þr  zflaky on PyPyztest requires 64-bit systeml        )Z
free_bytesc                 C   sÈ   d}z
t j|t jd}W n ty   t d¡ Y nw tj | d¡}t	|dƒ}t j
||d W d   ƒ n1 s9w   Y  ~t	|dƒ}t  |¡d }W d   ƒ n1 sVw   Y  |j|ksbJ ‚d S )	N)i   @r   r   zCould not create large fileZlarge_archiverk   rb   rp   rR   )rd   ÚemptyÚuint8ÚMemoryErrorrâ   r  rs   rt   ru   rv   r•   r‚   rn   )r|   rn   rˆ   rš   rS   Znew_arD   rD   rE   Útest_large_archivež  s   ÿÿÿr  c                 C   sH   t j | d¡}t |¡ t |¡	}W d   ƒ d S 1 sw   Y  d S )Nznothing.npz)rs   rt   ru   rd   r•   r‚   )r|   rš   ZnpsrD   rD   rE   Útest_empty_npz¹  s
   
"ÿr  c              	   C   s  t jg d¢dtfdtfgd}tj | d¡}t|dƒ}tj||dd W d   ƒ n1 s.w   Y  t|d	ƒ}t 	|¡}W d   ƒ n1 sHw   Y  t
||ƒ t|dƒ-}ttƒ tj||d d W d   ƒ n1 sow   Y  W d   ƒ d S W d   ƒ d S 1 s‡w   Y  d S )
N)©r/   r   r  r  r  Úintu   æ•´å½¢r   zunicode.npyrk   )r   r   rÂ   rp   )rd   r¤   r  rs   rt   ru   rv   r   rN   rP   r   r   rÎ   )r|   rR   rš   rS   rU   rD   rD   rE   Útest_unicode_field_namesÁ  s(   
þû	ÿÿ

ÿÿ"ÿr  c                  C   s”   g d¢g d¢g d¢g d¢fD ]9\} }}dd„ t tjƒD ƒD ])}tƒ }t || r+d|fn|df| t d| tfg¡d	œ¡ t| 	¡ ƒ|ksFJ ‚qqd S )
N)Fé   é€   )Fé   éÀ   )Tr  r  )Té   r   c                 S   s   g | ]}d | ‘qS )r   rD   r»   rD   rD   rE   r½   Ü  s    z+test_header_growth_axis.<locals>.<listcomp>r   ú rú   )
r”   r   ZGROWTH_AXIS_MAX_DIGITSr   rü   rd   r   r  rÒ   rO   )Zis_fortran_arrayZdtype_spaceZexpected_header_lengthrA   r~   rD   rD   rE   Útest_header_growth_axisØ  s   ÿýøýr#  zdt, failZS3ZsomeÚstuff)ÚmetadataZsubarrayr   )é   r   r   zPyPy bug in error formattingc                 C   sÎ   t jd| d}tƒ }ttƒ t  ||¡ W d   ƒ n1 sw   Y  | d¡ |rGttƒ t  	|¡ W d   ƒ d S 1 s@w   Y  d S t  	|¡}ddl
m} t||ƒ ||jƒs^J ‚||jƒreJ ‚d S )Nr   r   r   )Ú_has_metadata)rd   re   r   r   rÎ   r°   rÐ   r   ra   r‚   Znumpy.lib.formatr'  r   r   )r’   ZfailrR   ÚbufrU   r'  rD   rD   rE   Útest_metadata_dtypeæ  s   
ÿ

"ÿ

r)  )kÚ__doc__r  rs   rË   râ   Úior   Únumpyrd   Znumpy.testingr   r   r   r   r   r   r	   Znumpy.testing._private.utilsr
   Z	numpy.libr   r  Zint8Zuint16Zint16Zuint32Zint32Zuint64Zint64Zfloat32Zfloat64Z	complex64Z
complex128r_   Zscalarsr[   ZscalarZendianr   Znewbyteorderré   ZastypeÚbasicÚextendr¤   ZreshapeÚTZPdescrZPbufferTZNdescrZNbufferTr“   r\   r;   rV   rW   rX   rZ   r^   r`   rc   rh   ÚmarkZskipifZslowr€   r†   r´   Zdt2Zdt3Zdt4Zdt5Zdt6Zparametrizer–   Zxfailr›   r¯   r±   r  rµ   r×   rØ   ræ   rç   rê   rö   rò   rñ   rõ   r÷   rù   rÿ   r  r  r	  r  Zintpr‘   r  r  r  r#  rº   ÚimplementationrÃ   r)  rD   rD   rD   rE   Ú<module>   sŽ    $ó
ôýý
÷
þï&ÿ&ÿúû
	
ÿÿ

/þýüýûú


ýû
øýþø
õòÿã
1



ÿÿÿ
ÿþú
ÿ