966 lines
37 KiB
Python
966 lines
37 KiB
Python
from __future__ import division, absolute_import, print_function
|
|
|
|
# doctest
|
|
r''' Test the .npy file format.
|
|
|
|
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"
|
|
'''
|
|
import sys
|
|
import os
|
|
import shutil
|
|
import tempfile
|
|
import warnings
|
|
import pytest
|
|
from io import BytesIO
|
|
|
|
import numpy as np
|
|
from numpy.testing import (
|
|
assert_, assert_array_equal, assert_raises, assert_raises_regex,
|
|
assert_warns
|
|
)
|
|
from numpy.lib import format
|
|
|
|
|
|
tempdir = None
|
|
|
|
# Module-level setup.
|
|
|
|
|
|
def setup_module():
|
|
global tempdir
|
|
tempdir = tempfile.mkdtemp()
|
|
|
|
|
|
def teardown_module():
|
|
global tempdir
|
|
if tempdir is not None and os.path.isdir(tempdir):
|
|
shutil.rmtree(tempdir)
|
|
tempdir = None
|
|
|
|
|
|
# Generate some basic arrays to test with.
|
|
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(1500).astype(dtype)
|
|
basic_arrays.extend([
|
|
# Empty
|
|
np.array([], dtype=dtype),
|
|
# Rank-0
|
|
np.array(10, dtype=dtype),
|
|
# 1-D
|
|
basic,
|
|
# 2-D C-contiguous
|
|
basic.reshape((30, 50)),
|
|
# 2-D F-contiguous
|
|
basic.reshape((30, 50)).T,
|
|
# 2-D non-contiguous
|
|
basic.reshape((30, 50))[::-1, ::2],
|
|
])
|
|
|
|
# More complicated record arrays.
|
|
# This is the structure of the table used for plain objects:
|
|
#
|
|
# +-+-+-+
|
|
# |x|y|z|
|
|
# +-+-+-+
|
|
|
|
# Structure of a plain array description:
|
|
Pdescr = [
|
|
('x', 'i4', (2,)),
|
|
('y', 'f8', (2, 2)),
|
|
('z', 'u1')]
|
|
|
|
# A plain list of tuples with values for testing:
|
|
PbufferT = [
|
|
# x y z
|
|
([3, 2], [[6., 4.], [6., 4.]], 8),
|
|
([4, 3], [[7., 5.], [7., 5.]], 9),
|
|
]
|
|
|
|
|
|
# This is the structure of the table used for nested objects (DON'T PANIC!):
|
|
#
|
|
# +-+---------------------------------+-----+----------+-+-+
|
|
# |x|Info |color|info |y|z|
|
|
# | +-----+--+----------------+----+--+ +----+-----+ | |
|
|
# | |value|y2|Info2 |name|z2| |Name|Value| | |
|
|
# | | | +----+-----+--+--+ | | | | | | |
|
|
# | | | |name|value|y3|z3| | | | | | | |
|
|
# +-+-----+--+----+-----+--+--+----+--+-----+----+-----+-+-+
|
|
#
|
|
|
|
# The corresponding nested array description:
|
|
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 = [
|
|
# x Info color info y z
|
|
# value y2 Info2 name z2 Name Value
|
|
# name value y3 z3
|
|
([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('>')),
|
|
np.zeros(1, dtype=[('c', ('<f8', (5,)), (2,))])
|
|
]
|
|
|
|
|
|
#BytesIO that reads a random number of bytes at a time
|
|
class BytesIOSRandomSize(BytesIO):
|
|
def read(self, size=None):
|
|
import random
|
|
size = random.randint(1, size)
|
|
return super(BytesIOSRandomSize, self).read(size)
|
|
|
|
|
|
def roundtrip(arr):
|
|
f = BytesIO()
|
|
format.write_array(f, arr)
|
|
f2 = BytesIO(f.getvalue())
|
|
arr2 = format.read_array(f2, allow_pickle=True)
|
|
return arr2
|
|
|
|
|
|
def roundtrip_randsize(arr):
|
|
f = BytesIO()
|
|
format.write_array(f, arr)
|
|
f2 = BytesIOSRandomSize(f.getvalue())
|
|
arr2 = format.read_array(f2)
|
|
return arr2
|
|
|
|
|
|
def roundtrip_truncated(arr):
|
|
f = BytesIO()
|
|
format.write_array(f, arr)
|
|
#BytesIO is one byte short
|
|
f2 = BytesIO(f.getvalue()[0:-1])
|
|
arr2 = format.read_array(f2)
|
|
return arr2
|
|
|
|
|
|
def assert_equal_(o1, o2):
|
|
assert_(o1 == o2)
|
|
|
|
|
|
def test_roundtrip():
|
|
for arr in basic_arrays + record_arrays:
|
|
arr2 = roundtrip(arr)
|
|
assert_array_equal(arr, arr2)
|
|
|
|
|
|
def test_roundtrip_randsize():
|
|
for arr in basic_arrays + record_arrays:
|
|
if arr.dtype != object:
|
|
arr2 = roundtrip_randsize(arr)
|
|
assert_array_equal(arr, arr2)
|
|
|
|
|
|
def test_roundtrip_truncated():
|
|
for arr in basic_arrays:
|
|
if arr.dtype != object:
|
|
assert_raises(ValueError, roundtrip_truncated, arr)
|
|
|
|
|
|
def test_long_str():
|
|
# check items larger than internal buffer size, gh-4027
|
|
long_str_arr = np.ones(1, dtype=np.dtype((str, format.BUFFER_SIZE + 1)))
|
|
long_str_arr2 = roundtrip(long_str_arr)
|
|
assert_array_equal(long_str_arr, long_str_arr2)
|
|
|
|
|
|
@pytest.mark.slow
|
|
def test_memmap_roundtrip():
|
|
# Fixme: used to crash on windows
|
|
if not (sys.platform == 'win32' or sys.platform == 'cygwin'):
|
|
for arr in basic_arrays + record_arrays:
|
|
if arr.dtype.hasobject:
|
|
# Skip these since they can't be mmap'ed.
|
|
continue
|
|
# Write it out normally and through mmap.
|
|
nfn = os.path.join(tempdir, 'normal.npy')
|
|
mfn = os.path.join(tempdir, 'memmap.npy')
|
|
fp = open(nfn, 'wb')
|
|
try:
|
|
format.write_array(fp, arr)
|
|
finally:
|
|
fp.close()
|
|
|
|
fortran_order = (
|
|
arr.flags.f_contiguous and not arr.flags.c_contiguous)
|
|
ma = format.open_memmap(mfn, mode='w+', dtype=arr.dtype,
|
|
shape=arr.shape, fortran_order=fortran_order)
|
|
ma[...] = arr
|
|
del ma
|
|
|
|
# Check that both of these files' contents are the same.
|
|
fp = open(nfn, 'rb')
|
|
normal_bytes = fp.read()
|
|
fp.close()
|
|
fp = open(mfn, 'rb')
|
|
memmap_bytes = fp.read()
|
|
fp.close()
|
|
assert_equal_(normal_bytes, memmap_bytes)
|
|
|
|
# Check that reading the file using memmap works.
|
|
ma = format.open_memmap(nfn, mode='r')
|
|
del ma
|
|
|
|
|
|
def test_compressed_roundtrip():
|
|
arr = np.random.rand(200, 200)
|
|
npz_file = os.path.join(tempdir, 'compressed.npz')
|
|
np.savez_compressed(npz_file, arr=arr)
|
|
arr1 = np.load(npz_file)['arr']
|
|
assert_array_equal(arr, arr1)
|
|
|
|
|
|
# aligned
|
|
dt1 = np.dtype('i1, i4, i1', align=True)
|
|
# non-aligned, explicit offsets
|
|
dt2 = np.dtype({'names': ['a', 'b'], 'formats': ['i4', 'i4'],
|
|
'offsets': [1, 6]})
|
|
# nested struct-in-struct
|
|
dt3 = np.dtype({'names': ['c', 'd'], 'formats': ['i4', dt2]})
|
|
# field with '' name
|
|
dt4 = np.dtype({'names': ['a', '', 'b'], 'formats': ['i4']*3})
|
|
# titles
|
|
dt5 = np.dtype({'names': ['a', 'b'], 'formats': ['i4', 'i4'],
|
|
'offsets': [1, 6], 'titles': ['aa', 'bb']})
|
|
|
|
@pytest.mark.parametrize("dt", [dt1, dt2, dt3, dt4, dt5])
|
|
def test_load_padded_dtype(dt):
|
|
arr = np.zeros(3, dt)
|
|
for i in range(3):
|
|
arr[i] = i + 5
|
|
npz_file = os.path.join(tempdir, 'aligned.npz')
|
|
np.savez(npz_file, arr=arr)
|
|
arr1 = np.load(npz_file)['arr']
|
|
assert_array_equal(arr, arr1)
|
|
|
|
|
|
def test_python2_python3_interoperability():
|
|
if sys.version_info[0] >= 3:
|
|
fname = 'win64python2.npy'
|
|
else:
|
|
fname = 'python3.npy'
|
|
path = os.path.join(os.path.dirname(__file__), 'data', fname)
|
|
data = np.load(path)
|
|
assert_array_equal(data, np.ones(2))
|
|
|
|
def test_pickle_python2_python3():
|
|
# Test that loading object arrays saved on Python 2 works both on
|
|
# Python 2 and Python 3 and vice versa
|
|
data_dir = os.path.join(os.path.dirname(__file__), 'data')
|
|
|
|
if sys.version_info[0] >= 3:
|
|
xrange = range
|
|
else:
|
|
import __builtin__
|
|
xrange = __builtin__.xrange
|
|
|
|
expected = np.array([None, xrange, u'\u512a\u826f',
|
|
b'\xe4\xb8\x8d\xe8\x89\xaf'],
|
|
dtype=object)
|
|
|
|
for fname in ['py2-objarr.npy', 'py2-objarr.npz',
|
|
'py3-objarr.npy', 'py3-objarr.npz']:
|
|
path = os.path.join(data_dir, fname)
|
|
|
|
for encoding in ['bytes', 'latin1']:
|
|
data_f = np.load(path, allow_pickle=True, encoding=encoding)
|
|
if fname.endswith('.npz'):
|
|
data = data_f['x']
|
|
data_f.close()
|
|
else:
|
|
data = data_f
|
|
|
|
if sys.version_info[0] >= 3:
|
|
if encoding == 'latin1' and fname.startswith('py2'):
|
|
assert_(isinstance(data[3], str))
|
|
assert_array_equal(data[:-1], expected[:-1])
|
|
# mojibake occurs
|
|
assert_array_equal(data[-1].encode(encoding), expected[-1])
|
|
else:
|
|
assert_(isinstance(data[3], bytes))
|
|
assert_array_equal(data, expected)
|
|
else:
|
|
assert_array_equal(data, expected)
|
|
|
|
if sys.version_info[0] >= 3:
|
|
if fname.startswith('py2'):
|
|
if fname.endswith('.npz'):
|
|
data = np.load(path, allow_pickle=True)
|
|
assert_raises(UnicodeError, data.__getitem__, 'x')
|
|
data.close()
|
|
data = np.load(path, allow_pickle=True, fix_imports=False,
|
|
encoding='latin1')
|
|
assert_raises(ImportError, data.__getitem__, 'x')
|
|
data.close()
|
|
else:
|
|
assert_raises(UnicodeError, np.load, path,
|
|
allow_pickle=True)
|
|
assert_raises(ImportError, np.load, path,
|
|
allow_pickle=True, fix_imports=False,
|
|
encoding='latin1')
|
|
|
|
|
|
def test_pickle_disallow():
|
|
data_dir = os.path.join(os.path.dirname(__file__), 'data')
|
|
|
|
path = os.path.join(data_dir, 'py2-objarr.npy')
|
|
assert_raises(ValueError, np.load, path,
|
|
allow_pickle=False, encoding='latin1')
|
|
|
|
path = os.path.join(data_dir, 'py2-objarr.npz')
|
|
f = np.load(path, allow_pickle=False, encoding='latin1')
|
|
assert_raises(ValueError, f.__getitem__, 'x')
|
|
|
|
path = os.path.join(tempdir, 'pickle-disabled.npy')
|
|
assert_raises(ValueError, np.save, path, np.array([None], dtype=object),
|
|
allow_pickle=False)
|
|
|
|
@pytest.mark.parametrize('dt', [
|
|
np.dtype(np.dtype([('a', np.int8),
|
|
('b', np.int16),
|
|
('c', np.int32),
|
|
], align=True),
|
|
(3,)),
|
|
np.dtype([('x', np.dtype({'names':['a','b'],
|
|
'formats':['i1','i1'],
|
|
'offsets':[0,4],
|
|
'itemsize':8,
|
|
},
|
|
(3,)),
|
|
(4,),
|
|
)]),
|
|
np.dtype([('x',
|
|
('<f8', (5,)),
|
|
(2,),
|
|
)]),
|
|
np.dtype([('x', np.dtype((
|
|
np.dtype((
|
|
np.dtype({'names':['a','b'],
|
|
'formats':['i1','i1'],
|
|
'offsets':[0,4],
|
|
'itemsize':8}),
|
|
(3,)
|
|
)),
|
|
(4,)
|
|
)))
|
|
]),
|
|
np.dtype([
|
|
('a', np.dtype((
|
|
np.dtype((
|
|
np.dtype((
|
|
np.dtype([
|
|
('a', int),
|
|
('b', np.dtype({'names':['a','b'],
|
|
'formats':['i1','i1'],
|
|
'offsets':[0,4],
|
|
'itemsize':8})),
|
|
]),
|
|
(3,),
|
|
)),
|
|
(4,),
|
|
)),
|
|
(5,),
|
|
)))
|
|
]),
|
|
])
|
|
|
|
def test_descr_to_dtype(dt):
|
|
dt1 = format.descr_to_dtype(dt.descr)
|
|
assert_equal_(dt1, dt)
|
|
arr1 = np.zeros(3, dt)
|
|
arr2 = roundtrip(arr1)
|
|
assert_array_equal(arr1, arr2)
|
|
|
|
def test_version_2_0():
|
|
f = BytesIO()
|
|
# requires more than 2 byte for header
|
|
dt = [(("%d" % i) * 100, float) for i in range(500)]
|
|
d = np.ones(1000, dtype=dt)
|
|
|
|
format.write_array(f, d, version=(2, 0))
|
|
with warnings.catch_warnings(record=True) as w:
|
|
warnings.filterwarnings('always', '', UserWarning)
|
|
format.write_array(f, d)
|
|
assert_(w[0].category is UserWarning)
|
|
|
|
# check alignment of data portion
|
|
f.seek(0)
|
|
header = f.readline()
|
|
assert_(len(header) % format.ARRAY_ALIGN == 0)
|
|
|
|
f.seek(0)
|
|
n = format.read_array(f)
|
|
assert_array_equal(d, n)
|
|
|
|
# 1.0 requested but data cannot be saved this way
|
|
assert_raises(ValueError, format.write_array, f, d, (1, 0))
|
|
|
|
|
|
@pytest.mark.slow
|
|
def test_version_2_0_memmap():
|
|
# requires more than 2 byte for header
|
|
dt = [(("%d" % i) * 100, float) for i in range(500)]
|
|
d = np.ones(1000, dtype=dt)
|
|
tf = tempfile.mktemp('', 'mmap', dir=tempdir)
|
|
|
|
# 1.0 requested but data cannot be saved this way
|
|
assert_raises(ValueError, format.open_memmap, tf, mode='w+', dtype=d.dtype,
|
|
shape=d.shape, version=(1, 0))
|
|
|
|
ma = format.open_memmap(tf, mode='w+', dtype=d.dtype,
|
|
shape=d.shape, version=(2, 0))
|
|
ma[...] = d
|
|
del ma
|
|
|
|
with warnings.catch_warnings(record=True) as w:
|
|
warnings.filterwarnings('always', '', UserWarning)
|
|
ma = format.open_memmap(tf, mode='w+', dtype=d.dtype,
|
|
shape=d.shape, version=None)
|
|
assert_(w[0].category is UserWarning)
|
|
ma[...] = d
|
|
del ma
|
|
|
|
ma = format.open_memmap(tf, mode='r')
|
|
assert_array_equal(ma, d)
|
|
|
|
|
|
def test_write_version():
|
|
f = BytesIO()
|
|
arr = np.arange(1)
|
|
# These should pass.
|
|
format.write_array(f, arr, version=(1, 0))
|
|
format.write_array(f, arr)
|
|
|
|
format.write_array(f, arr, version=None)
|
|
format.write_array(f, arr)
|
|
|
|
format.write_array(f, arr, version=(2, 0))
|
|
format.write_array(f, arr)
|
|
|
|
# These should all fail.
|
|
bad_versions = [
|
|
(1, 1),
|
|
(0, 0),
|
|
(0, 1),
|
|
(2, 2),
|
|
(255, 255),
|
|
]
|
|
for version in bad_versions:
|
|
with assert_raises_regex(ValueError,
|
|
'we only support format version.*'):
|
|
format.write_array(f, arr, version=version)
|
|
|
|
|
|
bad_version_magic = [
|
|
b'\x93NUMPY\x01\x01',
|
|
b'\x93NUMPY\x00\x00',
|
|
b'\x93NUMPY\x00\x01',
|
|
b'\x93NUMPY\x02\x00',
|
|
b'\x93NUMPY\x02\x02',
|
|
b'\x93NUMPY\xff\xff',
|
|
]
|
|
malformed_magic = [
|
|
b'\x92NUMPY\x01\x00',
|
|
b'\x00NUMPY\x01\x00',
|
|
b'\x93numpy\x01\x00',
|
|
b'\x93MATLB\x01\x00',
|
|
b'\x93NUMPY\x01',
|
|
b'\x93NUMPY',
|
|
b'',
|
|
]
|
|
|
|
def test_read_magic():
|
|
s1 = BytesIO()
|
|
s2 = BytesIO()
|
|
|
|
arr = np.ones((3, 6), dtype=float)
|
|
|
|
format.write_array(s1, arr, version=(1, 0))
|
|
format.write_array(s2, arr, version=(2, 0))
|
|
|
|
s1.seek(0)
|
|
s2.seek(0)
|
|
|
|
version1 = format.read_magic(s1)
|
|
version2 = format.read_magic(s2)
|
|
|
|
assert_(version1 == (1, 0))
|
|
assert_(version2 == (2, 0))
|
|
|
|
assert_(s1.tell() == format.MAGIC_LEN)
|
|
assert_(s2.tell() == format.MAGIC_LEN)
|
|
|
|
def test_read_magic_bad_magic():
|
|
for magic in malformed_magic:
|
|
f = BytesIO(magic)
|
|
assert_raises(ValueError, format.read_array, f)
|
|
|
|
|
|
def test_read_version_1_0_bad_magic():
|
|
for magic in bad_version_magic + malformed_magic:
|
|
f = BytesIO(magic)
|
|
assert_raises(ValueError, format.read_array, f)
|
|
|
|
|
|
def test_bad_magic_args():
|
|
assert_raises(ValueError, format.magic, -1, 1)
|
|
assert_raises(ValueError, format.magic, 256, 1)
|
|
assert_raises(ValueError, format.magic, 1, -1)
|
|
assert_raises(ValueError, format.magic, 1, 256)
|
|
|
|
|
|
def test_large_header():
|
|
s = BytesIO()
|
|
d = {'a': 1, 'b': 2}
|
|
format.write_array_header_1_0(s, d)
|
|
|
|
s = BytesIO()
|
|
d = {'a': 1, 'b': 2, 'c': 'x'*256*256}
|
|
assert_raises(ValueError, format.write_array_header_1_0, s, d)
|
|
|
|
|
|
def test_read_array_header_1_0():
|
|
s = BytesIO()
|
|
|
|
arr = np.ones((3, 6), dtype=float)
|
|
format.write_array(s, arr, version=(1, 0))
|
|
|
|
s.seek(format.MAGIC_LEN)
|
|
shape, fortran, dtype = format.read_array_header_1_0(s)
|
|
|
|
assert_(s.tell() % format.ARRAY_ALIGN == 0)
|
|
assert_((shape, fortran, dtype) == ((3, 6), False, float))
|
|
|
|
|
|
def test_read_array_header_2_0():
|
|
s = BytesIO()
|
|
|
|
arr = np.ones((3, 6), dtype=float)
|
|
format.write_array(s, arr, version=(2, 0))
|
|
|
|
s.seek(format.MAGIC_LEN)
|
|
shape, fortran, dtype = format.read_array_header_2_0(s)
|
|
|
|
assert_(s.tell() % format.ARRAY_ALIGN == 0)
|
|
assert_((shape, fortran, dtype) == ((3, 6), False, float))
|
|
|
|
|
|
def test_bad_header():
|
|
# header of length less than 2 should fail
|
|
s = BytesIO()
|
|
assert_raises(ValueError, format.read_array_header_1_0, s)
|
|
s = BytesIO(b'1')
|
|
assert_raises(ValueError, format.read_array_header_1_0, s)
|
|
|
|
# header shorter than indicated size should fail
|
|
s = BytesIO(b'\x01\x00')
|
|
assert_raises(ValueError, format.read_array_header_1_0, s)
|
|
|
|
# headers without the exact keys required should fail
|
|
d = {"shape": (1, 2),
|
|
"descr": "x"}
|
|
s = BytesIO()
|
|
format.write_array_header_1_0(s, d)
|
|
assert_raises(ValueError, format.read_array_header_1_0, s)
|
|
|
|
d = {"shape": (1, 2),
|
|
"fortran_order": False,
|
|
"descr": "x",
|
|
"extrakey": -1}
|
|
s = BytesIO()
|
|
format.write_array_header_1_0(s, d)
|
|
assert_raises(ValueError, format.read_array_header_1_0, s)
|
|
|
|
|
|
def test_large_file_support():
|
|
if (sys.platform == 'win32' or sys.platform == 'cygwin'):
|
|
pytest.skip("Unknown if Windows has sparse filesystems")
|
|
# try creating a large sparse file
|
|
tf_name = os.path.join(tempdir, 'sparse_file')
|
|
try:
|
|
# seek past end would work too, but linux truncate somewhat
|
|
# increases the chances that we have a sparse filesystem and can
|
|
# avoid actually writing 5GB
|
|
import subprocess as sp
|
|
sp.check_call(["truncate", "-s", "5368709120", tf_name])
|
|
except Exception:
|
|
pytest.skip("Could not create 5GB large file")
|
|
# write a small array to the end
|
|
with open(tf_name, "wb") as f:
|
|
f.seek(5368709120)
|
|
d = np.arange(5)
|
|
np.save(f, d)
|
|
# read it back
|
|
with open(tf_name, "rb") as f:
|
|
f.seek(5368709120)
|
|
r = np.load(f)
|
|
assert_array_equal(r, d)
|
|
|
|
|
|
@pytest.mark.skipif(np.dtype(np.intp).itemsize < 8,
|
|
reason="test requires 64-bit system")
|
|
@pytest.mark.slow
|
|
def test_large_archive():
|
|
# Regression test for product of saving arrays with dimensions of array
|
|
# having a product that doesn't fit in int32. See gh-7598 for details.
|
|
try:
|
|
a = np.empty((2**30, 2), dtype=np.uint8)
|
|
except MemoryError:
|
|
pytest.skip("Could not create large file")
|
|
|
|
fname = os.path.join(tempdir, "large_archive")
|
|
|
|
with open(fname, "wb") as f:
|
|
np.savez(f, arr=a)
|
|
|
|
with open(fname, "rb") as f:
|
|
new_a = np.load(f)["arr"]
|
|
|
|
assert_(a.shape == new_a.shape)
|
|
|
|
|
|
def test_empty_npz():
|
|
# Test for gh-9989
|
|
fname = os.path.join(tempdir, "nothing.npz")
|
|
np.savez(fname)
|
|
np.load(fname)
|
|
|
|
|
|
def test_unicode_field_names():
|
|
# gh-7391
|
|
arr = np.array([
|
|
(1, 3),
|
|
(1, 2),
|
|
(1, 3),
|
|
(1, 2)
|
|
], dtype=[
|
|
('int', int),
|
|
(u'\N{CJK UNIFIED IDEOGRAPH-6574}\N{CJK UNIFIED IDEOGRAPH-5F62}', int)
|
|
])
|
|
fname = os.path.join(tempdir, "unicode.npy")
|
|
with open(fname, 'wb') as f:
|
|
format.write_array(f, arr, version=(3, 0))
|
|
with open(fname, 'rb') as f:
|
|
arr2 = format.read_array(f)
|
|
assert_array_equal(arr, arr2)
|
|
|
|
# notifies the user that 3.0 is selected
|
|
with open(fname, 'wb') as f:
|
|
with assert_warns(UserWarning):
|
|
format.write_array(f, arr, version=None)
|