Numpy.NET/test/Numpy.UnitTest/NumPy_io.tests.cs at main · SciSharp/Numpy.NET · GitHub

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// Code generated by CodeMinion: https://github.com/SciSharp/CodeMinion

using System;

using System.Collections;

using System.Collections.Generic;

using System.IO;

using System.Linq;

using System.Runtime.InteropServices;

using System.Text;

using Numpy.Models;

using Microsoft.VisualStudio.TestTools.UnitTesting;

using Assert = NUnit.Framework.Assert;

namespace Numpy.UnitTest

{

[TestClass]

public class NumPy_ioTest : BaseTestCase

{

[TestMethod]

public void loadTest()

{

// Store data to disk, and load it again:

// >>> np.save('/tmp/123', np.array([[1, 2, 3], [4, 5, 6]]))

// >>> np.load('/tmp/123.npy')

// array([[1, 2, 3],

// [4, 5, 6]])

#if TODO

var given= np.save('/tmp/123', np.array({{1, 2, 3}, {4, 5, 6}}));

given= np.load('/tmp/123.npy');

var expected=

"array([[1, 2, 3],\n" +

" [4, 5, 6]])";

Assert.AreEqual(expected, given.repr);

#endif

// Store compressed data to disk, and load it again:

// >>> a=np.array([[1, 2, 3], [4, 5, 6]])

// >>> b=np.array([1, 2])

// >>> np.savez('/tmp/123.npz', a=a, b=b)

// >>> data = np.load('/tmp/123.npz')

// >>> data['a']

// array([[1, 2, 3],

// [4, 5, 6]])

// >>> data['b']

// array([1, 2])

// >>> data.close()

#if TODO

given= a=np.array({{1, 2, 3}, {4, 5, 6}});

given= b=np.array({1, 2});

given= np.savez('/tmp/123.npz', a=a, b=b);

given= data = np.load('/tmp/123.npz');

given= data['a'];

expected=

"array([[1, 2, 3],\n" +

" [4, 5, 6]])";

Assert.AreEqual(expected, given.repr);

given= data['b'];

expected=

"array([1, 2])";

Assert.AreEqual(expected, given.repr);

given= data.close();

#endif

// Mem-map the stored array, and then access the second row

// directly from disk:

// >>> X = np.load('/tmp/123.npy', mmap_mode='r')

// >>> X[1, :]

// memmap([4, 5, 6])

#if TODO

given= X = np.load('/tmp/123.npy', mmap_mode='r');

given= X[1, :];

expected=

"memmap([4, 5, 6])";

Assert.AreEqual(expected, given.repr);

#endif

}

[TestMethod]

public void saveTest()

{

// >>> from tempfile import TemporaryFile

// >>> outfile = TemporaryFile()

#if TODO

var given= from tempfile import TemporaryFile;

given= outfile = TemporaryFile();

#endif

// >>> x = np.arange(10)

// >>> np.save(outfile, x)

#if TODO

given= x = np.arange(10);

given= np.save(outfile, x);

#endif

// >>> outfile.seek(0) # Only needed here to simulate closing & reopening file

// >>> np.load(outfile)

// array([0, 1, 2, 3, 4, 5, 6, 7, 8, 9])

#if TODO

given= outfile.seek(0) # Only needed here to simulate closing & reopening file;

given= np.load(outfile);

var expected=

"array([0, 1, 2, 3, 4, 5, 6, 7, 8, 9])";

Assert.AreEqual(expected, given.repr);

#endif

}

[TestMethod]

public void savezTest()

{

// >>> from tempfile import TemporaryFile

// >>> outfile = TemporaryFile()

// >>> x = np.arange(10)

// >>> y = np.sin(x)

#if TODO

var given= from tempfile import TemporaryFile;

given= outfile = TemporaryFile();

given= x = np.arange(10);

given= y = np.sin(x);

#endif

// Using savez with *args, the arrays are saved with default names.

// >>> np.savez(outfile, x, y)

// >>> outfile.seek(0) # Only needed here to simulate closing & reopening file

// >>> npzfile = np.load(outfile)

// >>> npzfile.files

// ['arr_1', 'arr_0']

// >>> npzfile['arr_0']

// array([0, 1, 2, 3, 4, 5, 6, 7, 8, 9])

#if TODO

given= np.savez(outfile, x, y);

given= outfile.seek(0) # Only needed here to simulate closing & reopening file;

given= npzfile = np.load(outfile);

given= npzfile.files;

var expected=

"['arr_1', 'arr_0']";

Assert.AreEqual(expected, given.repr);

given= npzfile['arr_0'];

expected=

"array([0, 1, 2, 3, 4, 5, 6, 7, 8, 9])";

Assert.AreEqual(expected, given.repr);

#endif

// Using savez with **kwds, the arrays are saved with the keyword names.

// >>> outfile = TemporaryFile()

// >>> np.savez(outfile, x=x, y=y)

// >>> outfile.seek(0)

// >>> npzfile = np.load(outfile)

// >>> npzfile.files

// ['y', 'x']

// >>> npzfile['x']

// array([0, 1, 2, 3, 4, 5, 6, 7, 8, 9])

#if TODO

given= outfile = TemporaryFile();

given= np.savez(outfile, x=x, y=y);

given= outfile.seek(0);

given= npzfile = np.load(outfile);

given= npzfile.files;

expected=

"['y', 'x']";

Assert.AreEqual(expected, given.repr);

given= npzfile['x'];

expected=

"array([0, 1, 2, 3, 4, 5, 6, 7, 8, 9])";

Assert.AreEqual(expected, given.repr);

#endif

}

[TestMethod]

public void savez_compressedTest()

{

// >>> test_array = np.random.rand(3, 2)

// >>> test_vector = np.random.rand(4)

// >>> np.savez_compressed('/tmp/123', a=test_array, b=test_vector)

// >>> loaded = np.load('/tmp/123.npz')

// >>> print(np.array_equal(test_array, loaded['a']))

// True

// >>> print(np.array_equal(test_vector, loaded['b']))

// True

#if TODO

var given= test_array = np.random.rand(3, 2);

given= test_vector = np.random.rand(4);

given= np.savez_compressed('/tmp/123', a=test_array, b=test_vector);

given= loaded = np.load('/tmp/123.npz');

given= print(np.array_equal(test_array, loaded{'a'}));

var expected=

"True";

Assert.AreEqual(expected, given.repr);

given= print(np.array_equal(test_vector, loaded{'b'}));

expected=

"True";

Assert.AreEqual(expected, given.repr);

#endif

}

[TestMethod]

public void savetxtTest()

{

// >>> x = y = z = np.arange(0.0,5.0,1.0)

// >>> np.savetxt('test.out', x, delimiter=',') # X is an array

// >>> np.savetxt('test.out', (x,y,z)) # x,y,z equal sized 1D arrays

// >>> np.savetxt('test.out', x, fmt='%1.4e') # use exponential notation

#if TODO

var given= x = y = z = np.arange(0.0,5.0,1.0);

given= np.savetxt('test.out', x, delimiter=',') # X is an array;

given= np.savetxt('test.out', (x,y,z)) # x,y,z equal sized 1D arrays;

given= np.savetxt('test.out', x, fmt='%1.4e') # use exponential notation;

#endif

}

[TestMethod]

public void genfromtxtTest()

{

// >>> from io import StringIO

// >>> import numpy as np

#if TODO

var given= from io import StringIO;

given= import numpy as np;

#endif

// Comma delimited file with mixed dtype

// >>> s = StringIO(u"1,1.3,abcde")

// >>> data = np.genfromtxt(s, dtype=[('myint','i8'),('myfloat','f8'),

// ... ('mystring','S5')], delimiter=",")

// >>> data

// array((1, 1.3, 'abcde'),

// dtype=[('myint', '<i8'), ('myfloat', '<f8'), ('mystring', '|S5')])

#if TODO

given= s = StringIO(u"1,1.3,abcde");

given= data = np.genfromtxt(s, dtype={('myint','i8'),('myfloat','f8'),;

var expected=

"... ('mystring','S5')], delimiter=",")";

Assert.AreEqual(expected, given.repr);

given= data;

expected=

"array((1, 1.3, 'abcde'),\n" +

" dtype=[('myint', '<i8'), ('myfloat', '<f8'), ('mystring', '|S5')])";

Assert.AreEqual(expected, given.repr);

#endif

// Using dtype = None

// >>> s.seek(0) # needed for StringIO example only

// >>> data = np.genfromtxt(s, dtype=None,

// ... names = ['myint','myfloat','mystring'], delimiter=",")

// >>> data

// array((1, 1.3, 'abcde'),

// dtype=[('myint', '<i8'), ('myfloat', '<f8'), ('mystring', '|S5')])

#if TODO

given= s.seek(0) # needed for StringIO example only;

given= data = np.genfromtxt(s, dtype=None,;

expected=

"... names = ['myint','myfloat','mystring'], delimiter=",")";

Assert.AreEqual(expected, given.repr);

given= data;

expected=

"array((1, 1.3, 'abcde'),\n" +

" dtype=[('myint', '<i8'), ('myfloat', '<f8'), ('mystring', '|S5')])";

Assert.AreEqual(expected, given.repr);

#endif

// Specifying dtype and names

// >>> s.seek(0)

// >>> data = np.genfromtxt(s, dtype="i8,f8,S5",

// ... names=['myint','myfloat','mystring'], delimiter=",")

// >>> data

// array((1, 1.3, 'abcde'),

// dtype=[('myint', '<i8'), ('myfloat', '<f8'), ('mystring', '|S5')])

#if TODO

given= s.seek(0);

given= data = np.genfromtxt(s, dtype="i8,f8,S5",;

expected=

"... names=['myint','myfloat','mystring'], delimiter=",")";

Assert.AreEqual(expected, given.repr);

given= data;

expected=

"array((1, 1.3, 'abcde'),\n" +

" dtype=[('myint', '<i8'), ('myfloat', '<f8'), ('mystring', '|S5')])";

Assert.AreEqual(expected, given.repr);

#endif

// An example with fixed-width columns

// >>> s = StringIO(u"11.3abcde")

// >>> data = np.genfromtxt(s, dtype=None, names=['intvar','fltvar','strvar'],

// ... delimiter=[1,3,5])

// >>> data

// array((1, 1.3, 'abcde'),

// dtype=[('intvar', '<i8'), ('fltvar', '<f8'), ('strvar', '|S5')])

#if TODO

given= s = StringIO(u"11.3abcde");

given= data = np.genfromtxt(s, dtype=None, names={'intvar','fltvar','strvar'},;

expected=

"... delimiter=[1,3,5])";

Assert.AreEqual(expected, given.repr);

given= data;

expected=

"array((1, 1.3, 'abcde'),\n" +

" dtype=[('intvar', '<i8'), ('fltvar', '<f8'), ('strvar', '|S5')])";

Assert.AreEqual(expected, given.repr);

#endif

}

[TestMethod]

public void fromregexTest()

{

// >>> f = open('test.dat', 'w')

// >>> f.write("1312 foo\n1534 bar\n444 qux")

// >>> f.close()

#if TODO

var given= f = open('test.dat', 'w');

given= f.write("1312 foo\n1534 bar\n444 qux");

given= f.close();

#endif

// >>> regexp = r"(\d+)\s+(...)" # match [digits, whitespace, anything]

// >>> output = np.fromregex('test.dat', regexp,

// ... [('num', np.int64), ('key', 'S3')])

// >>> output

// array([(1312L, 'foo'), (1534L, 'bar'), (444L, 'qux')],

// dtype=[('num', '<i8'), ('key', '|S3')])

// >>> output['num']

// array([1312, 1534, 444], dtype=int64)

#if TODO

given= regexp = r"(\d+)\s+(...)" # match [digits, whitespace, anything];

given= output = np.fromregex('test.dat', regexp,;

var expected=

"... [('num', np.int64), ('key', 'S3')])";

Assert.AreEqual(expected, given.repr);

given= output;

expected=

"array([(1312L, 'foo'), (1534L, 'bar'), (444L, 'qux')],\n" +

" dtype=[('num', '<i8'), ('key', '|S3')])";

Assert.AreEqual(expected, given.repr);

given= output['num'];

expected=

"array([1312, 1534, 444], dtype=int64)";

Assert.AreEqual(expected, given.repr);

#endif

}

[TestMethod]

public void tolistTest()

{

// >>> a = np.array([1, 2])

// >>> a.tolist()

// [1, 2]

// >>> a = np.array([[1, 2], [3, 4]])

// >>> list(a)

// [array([1, 2]), array([3, 4])]

// >>> a.tolist()

// [[1, 2], [3, 4]]

#if TODO

var given= a = np.array({1, 2});

given= a.tolist();

var expected=

"[1, 2]";

Assert.AreEqual(expected, given.repr);

given= a = np.array({{1, 2}, {3, 4}});

given= list(a);

expected=

"[array([1, 2]), array([3, 4])]";

Assert.AreEqual(expected, given.repr);

given= a.tolist();

expected=

"[[1, 2], [3, 4]]";

Assert.AreEqual(expected, given.repr);

#endif

}

[TestMethod]

public void array2stringTest()

{

// >>> x = np.array([1e-16,1,2,3])

// >>> print(np.array2string(x, precision=2, separator=',',

// ... suppress_small=True))

// [ 0., 1., 2., 3.]

#if TODO

var given= x = np.array({1e-16,1,2,3});

given= print(np.array2string(x, precision=2, separator=',',;

var expected=

"... suppress_small=True))\n" +

"[ 0., 1., 2., 3.]";

Assert.AreEqual(expected, given.repr);

#endif

// >>> x = np.arange(3.)

// >>> np.array2string(x, formatter={'float_kind':lambda x: "%.2f" % x})

// '[0.00 1.00 2.00]'

#if TODO

given= x = np.arange(3.);

given= np.array2string(x, formatter={'float_kind':lambda x: "%.2f" % x});

expected=

"'[0.00 1.00 2.00]'";

Assert.AreEqual(expected, given.repr);

#endif

// >>> x = np.arange(3)

// >>> np.array2string(x, formatter={'int':lambda x: hex(x)})

// '[0x0L 0x1L 0x2L]'

#if TODO

given= x = np.arange(3);

given= np.array2string(x, formatter={'int':lambda x: hex(x)});

expected=

"'[0x0L 0x1L 0x2L]'";

Assert.AreEqual(expected, given.repr);

#endif

}

[TestMethod]

public void array_reprTest()

{

// >>> np.array_repr(np.array([1,2]))

// 'array([1, 2])'

// >>> np.array_repr(np.ma.array([0.]))

// 'MaskedArray([ 0.])'

// >>> np.array_repr(np.array([], np.int32))

// 'array([], dtype=int32)'

#if TODO

var given= np.array_repr(np.array({1,2}));

var expected=

"'array([1, 2])'";

Assert.AreEqual(expected, given.repr);

given= np.array_repr(np.ma.array({0.}));

expected=

"'MaskedArray([ 0.])'";

Assert.AreEqual(expected, given.repr);

given= np.array_repr(np.array({}, np.int32));

expected=

"'array([], dtype=int32)'";

Assert.AreEqual(expected, given.repr);

#endif

// >>> x = np.array([1e-6, 4e-7, 2, 3])

// >>> np.array_repr(x, precision=6, suppress_small=True)

// 'array([ 0.000001, 0. , 2. , 3. ])'

#if TODO

given= x = np.array({1e-6, 4e-7, 2, 3});

given= np.array_repr(x, precision=6, suppress_small=True);

expected=

"'array([ 0.000001, 0. , 2. , 3. ])'";

Assert.AreEqual(expected, given.repr);

#endif

}

[TestMethod]

public void array_strTest()

{

// >>> np.array_str(np.arange(3))

// '[0 1 2]'

#if TODO

var given= np.array_str(np.arange(3));

var expected=

"'[0 1 2]'";

Assert.AreEqual(expected, given.repr);

#endif

}

[TestMethod]

public void format_float_positionalTest()

{

// >>> np.format_float_positional(np.float32(np.pi))

// '3.1415927'

// >>> np.format_float_positional(np.float16(np.pi))

// '3.14'

// >>> np.format_float_positional(np.float16(0.3))

// '0.3'

// >>> np.format_float_positional(np.float16(0.3), unique=False, precision=10)

// '0.3000488281'

#if TODO

var given= np.format_float_positional(np.float32(np.pi));

var expected=

"'3.1415927'";

Assert.AreEqual(expected, given.repr);

given= np.format_float_positional(np.float16(np.pi));

expected=

"'3.14'";

Assert.AreEqual(expected, given.repr);

given= np.format_float_positional(np.float16(0.3));

expected=

"'0.3'";

Assert.AreEqual(expected, given.repr);

given= np.format_float_positional(np.float16(0.3), unique=False, precision=10);

expected=

"'0.3000488281'";

Assert.AreEqual(expected, given.repr);

#endif

}

[TestMethod]

public void format_float_scientificTest()

{

// >>> np.format_float_scientific(np.float32(np.pi))

// '3.1415927e+00'

// >>> s = np.float32(1.23e24)

// >>> np.format_float_scientific(s, unique=False, precision=15)

// '1.230000071797338e+24'

// >>> np.format_float_scientific(s, exp_digits=4)

// '1.23e+0024'

#if TODO

var given= np.format_float_scientific(np.float32(np.pi));

var expected=

"'3.1415927e+00'";

Assert.AreEqual(expected, given.repr);

given= s = np.float32(1.23e24);

given= np.format_float_scientific(s, unique=False, precision=15);

expected=

"'1.230000071797338e+24'";

Assert.AreEqual(expected, given.repr);

given= np.format_float_scientific(s, exp_digits=4);

expected=

"'1.23e+0024'";

Assert.AreEqual(expected, given.repr);

#endif

}

[TestMethod]

public void memmapTest()

{

// >>> data = np.arange(12, dtype='float32')

// >>> data.resize((3,4))

#if TODO

var given= data = np.arange(12, dtype='float32');

given= data.resize((3,4));

#endif

// This example uses a temporary file so that doctest doesn’t write

// files to your directory. You would use a ‘normal’ filename.

// >>> from tempfile import mkdtemp

// >>> import os.path as path

// >>> filename = path.join(mkdtemp(), 'newfile.dat')

#if TODO

given= from tempfile import mkdtemp;

given= import os.path as path;

given= filename = path.join(mkdtemp(), 'newfile.dat');

#endif

// Create a memmap with dtype and shape that matches our data:

// >>> fp = np.memmap(filename, dtype='float32', mode='w+', shape=(3,4))

// >>> fp

// memmap([[ 0., 0., 0., 0.],

// [ 0., 0., 0., 0.],

// [ 0., 0., 0., 0.]], dtype=float32)

#if TODO

given= fp = np.memmap(filename, dtype='float32', mode='w+', shape=(3,4));

given= fp;

var expected=

"memmap([[ 0., 0., 0., 0.],\n" +

" [ 0., 0., 0., 0.],\n" +

" [ 0., 0., 0., 0.]], dtype=float32)";

Assert.AreEqual(expected, given.repr);

#endif

// Write data to memmap array:

// >>> fp[:] = data[:]

// >>> fp

// memmap([[ 0., 1., 2., 3.],

// [ 4., 5., 6., 7.],

// [ 8., 9., 10., 11.]], dtype=float32)

#if TODO

given= fp[:] = data[:];

given= fp;

expected=

"memmap([[ 0., 1., 2., 3.],\n" +

" [ 4., 5., 6., 7.],\n" +

" [ 8., 9., 10., 11.]], dtype=float32)";

Assert.AreEqual(expected, given.repr);

#endif

// >>> fp.filename == path.abspath(filename)

// True

#if TODO

given= fp.filename == path.abspath(filename);

expected=

"True";

Assert.AreEqual(expected, given.repr);

#endif

// Deletion flushes memory changes to disk before removing the object:

// >>> del fp

#if TODO

given= del fp;

#endif

// Load the memmap and verify data was stored:

// >>> newfp = np.memmap(filename, dtype='float32', mode='r', shape=(3,4))

// >>> newfp

// memmap([[ 0., 1., 2., 3.],

// [ 4., 5., 6., 7.],

// [ 8., 9., 10., 11.]], dtype=float32)

#if TODO

given= newfp = np.memmap(filename, dtype='float32', mode='r', shape=(3,4));

given= newfp;

expected=

"memmap([[ 0., 1., 2., 3.],\n" +

" [ 4., 5., 6., 7.],\n" +

" [ 8., 9., 10., 11.]], dtype=float32)";

Assert.AreEqual(expected, given.repr);

#endif

// Read-only memmap:

// >>> fpr = np.memmap(filename, dtype='float32', mode='r', shape=(3,4))

// >>> fpr.flags.writeable

// False

#if TODO

given= fpr = np.memmap(filename, dtype='float32', mode='r', shape=(3,4));

given= fpr.flags.writeable;

expected=

"False";

Assert.AreEqual(expected, given.repr);

#endif

// Copy-on-write memmap:

// >>> fpc = np.memmap(filename, dtype='float32', mode='c', shape=(3,4))

// >>> fpc.flags.writeable

// True

#if TODO

given= fpc = np.memmap(filename, dtype='float32', mode='c', shape=(3,4));

given= fpc.flags.writeable;

expected=

"True";

Assert.AreEqual(expected, given.repr);

#endif

// It’s possible to assign to copy-on-write array, but values are only

// written into the memory copy of the array, and not written to disk:

// >>> fpc

// memmap([[ 0., 1., 2., 3.],

// [ 4., 5., 6., 7.],

// [ 8., 9., 10., 11.]], dtype=float32)

// >>> fpc[0,:] = 0

// >>> fpc

// memmap([[ 0., 0., 0., 0.],

// [ 4., 5., 6., 7.],

// [ 8., 9., 10., 11.]], dtype=float32)

#if TODO

given= fpc;

expected=

"memmap([[ 0., 1., 2., 3.],\n" +

" [ 4., 5., 6., 7.],\n" +

" [ 8., 9., 10., 11.]], dtype=float32)";

Assert.AreEqual(expected, given.repr);

given= fpc[0,:] = 0;

given= fpc;

expected=

"memmap([[ 0., 0., 0., 0.],\n" +

" [ 4., 5., 6., 7.],\n" +

" [ 8., 9., 10., 11.]], dtype=float32)";

Assert.AreEqual(expected, given.repr);

#endif

// File on disk is unchanged:

// >>> fpr

// memmap([[ 0., 1., 2., 3.],

// [ 4., 5., 6., 7.],

// [ 8., 9., 10., 11.]], dtype=float32)

#if TODO

given= fpr;

expected=

"memmap([[ 0., 1., 2., 3.],\n" +

" [ 4., 5., 6., 7.],\n" +

" [ 8., 9., 10., 11.]], dtype=float32)";

Assert.AreEqual(expected, given.repr);

#endif

// Offset into a memmap:

// >>> fpo = np.memmap(filename, dtype='float32', mode='r', offset=16)

// >>> fpo

// memmap([ 4., 5., 6., 7., 8., 9., 10., 11.], dtype=float32)

#if TODO

given= fpo = np.memmap(filename, dtype='float32', mode='r', offset=16);

given= fpo;

expected=

"memmap([ 4., 5., 6., 7., 8., 9., 10., 11.], dtype=float32)";

Assert.AreEqual(expected, given.repr);

#endif

// Methods

}

[TestMethod]

public void set_printoptionsTest()

{

// Floating point precision can be set:

// >>> np.set_printoptions(precision=4)

// >>> print(np.array([1.123456789]))

// [ 1.1235]

#if TODO

var given= np.set_printoptions(precision=4);

given= print(np.array({1.123456789}));

var expected=

"[ 1.1235]";

Assert.AreEqual(expected, given.repr);

#endif

// Long arrays can be summarised:

// >>> np.set_printoptions(threshold=5)

// >>> print(np.arange(10))

// [0 1 2 ..., 7 8 9]

#if TODO

given= np.set_printoptions(threshold=5);

given= print(np.arange(10));

expected=

"[0 1 2 ..., 7 8 9]";

Assert.AreEqual(expected, given.repr);

#endif

// Small results can be suppressed:

// >>> eps = np.finfo(float).eps

// >>> x = np.arange(4.)

// >>> x**2 - (x + eps)**2

// array([ -4.9304e-32, -4.4409e-16, 0.0000e+00, 0.0000e+00])

// >>> np.set_printoptions(suppress=True)

// >>> x**2 - (x + eps)**2

// array([-0., -0., 0., 0.])

#if TODO

given= eps = np.finfo(float).eps;

given= x = np.arange(4.);

given= x**2 - (x + eps)**2;

expected=

"array([ -4.9304e-32, -4.4409e-16, 0.0000e+00, 0.0000e+00])";

Assert.AreEqual(expected, given.repr);

given= np.set_printoptions(suppress=True);

given= x**2 - (x + eps)**2;

expected=

"array([-0., -0., 0., 0.])";

Assert.AreEqual(expected, given.repr);

#endif

// A custom formatter can be used to display array elements as desired:

// >>> np.set_printoptions(formatter={'all':lambda x: 'int: '+str(-x)})

// >>> x = np.arange(3)

// >>> x

// array([int: 0, int: -1, int: -2])

// >>> np.set_printoptions() # formatter gets reset

// >>> x

// array([0, 1, 2])

#if TODO

given= np.set_printoptions(formatter={'all':lambda x: 'int: '+str(-x)});

given= x = np.arange(3);

given= x;

expected=

"array([int: 0, int: -1, int: -2])";

Assert.AreEqual(expected, given.repr);

given= np.set_printoptions() # formatter gets reset;

given= x;

expected=

"array([0, 1, 2])";

Assert.AreEqual(expected, given.repr);

#endif

// To put back the default options, you can use:

// >>> np.set_printoptions(edgeitems=3,infstr='inf',

// ... linewidth=75, nanstr='nan', precision=8,

// ... suppress=False, threshold=1000, formatter=None)

#if TODO

given= np.set_printoptions(edgeitems=3,infstr='inf',;

expected=

"... linewidth=75, nanstr='nan', precision=8,\n" +

"... suppress=False, threshold=1000, formatter=None)";

Assert.AreEqual(expected, given.repr);

#endif

}

[TestMethod]

public void set_string_functionTest()

{

// >>> def pprint(arr):

// ... return 'HA! - What are you going to do now?'

// ...

// >>> np.set_string_function(pprint)

// >>> a = np.arange(10)

// >>> a

// HA! - What are you going to do now?

// >>> print(a)

// [0 1 2 3 4 5 6 7 8 9]

#if TODO

var given= def pprint(arr):;

var expected=

"... return 'HA! - What are you going to do now?'\n" +

"...";

Assert.AreEqual(expected, given.repr);

given= np.set_string_function(pprint);

given= a = np.arange(10);

given= a;

expected=

"HA! - What are you going to do now?";

Assert.AreEqual(expected, given.repr);

given= print(a);

expected=

"[0 1 2 3 4 5 6 7 8 9]";

Assert.AreEqual(expected, given.repr);

#endif

// We can reset the function to the default:

// >>> np.set_string_function(None)

// >>> a

// array([0, 1, 2, 3, 4, 5, 6, 7, 8, 9])

#if TODO

given= np.set_string_function(None);

given= a;

expected=

"array([0, 1, 2, 3, 4, 5, 6, 7, 8, 9])";

Assert.AreEqual(expected, given.repr);

#endif

// repr affects either pretty printing or normal string representation.

// Note that __repr__ is still affected by setting __str__

// because the width of each array element in the returned string becomes

// equal to the length of the result of __str__().

// >>> x = np.arange(4)

// >>> np.set_string_function(lambda x:'random', repr=False)

// >>> x.__str__()

// 'random'

// >>> x.__repr__()

// 'array([ 0, 1, 2, 3])'

#if TODO

given= x = np.arange(4);

given= np.set_string_function(lambda x:'random', repr=False);

given= x.__str__();

expected=

"'random'";

Assert.AreEqual(expected, given.repr);

given= x.__repr__();

expected=

"'array([ 0, 1, 2, 3])'";

Assert.AreEqual(expected, given.repr);

#endif

}

[TestMethod]

public void base_reprTest()

{

// >>> np.base_repr(5)

// '101'

// >>> np.base_repr(6, 5)

// '11'

// >>> np.base_repr(7, base=5, padding=3)

// '00012'

#if TODO

var given= np.base_repr(5);

var expected=

"'101'";

Assert.AreEqual(expected, given.repr);

given= np.base_repr(6, 5);

expected=

"'11'";

Assert.AreEqual(expected, given.repr);

given= np.base_repr(7, base=5, padding=3);

expected=

"'00012'";

Assert.AreEqual(expected, given.repr);

#endif

// >>> np.base_repr(10, base=16)

// 'A'

// >>> np.base_repr(32, base=16)

// '20'

#if TODO

given= np.base_repr(10, base=16);

expected=

"'A'";

Assert.AreEqual(expected, given.repr);

given= np.base_repr(32, base=16);

expected=

"'20'";

Assert.AreEqual(expected, given.repr);

#endif

}

[TestMethod]

public void DataSourceTest()

{

// >>> ds = DataSource('/home/guido')

// >>> urlname = 'http://www.google.com/index.html'

// >>> gfile = ds.open('http://www.google.com/index.html') # remote file

// >>> ds.abspath(urlname)

// '/home/guido/www.google.com/site/index.html'

// >>> ds = DataSource(None) # use with temporary file

// >>> ds.open('/home/guido/foobar.txt')

// <open file '/home/guido.foobar.txt', mode 'r' at 0x91d4430>

// >>> ds.abspath('/home/guido/foobar.txt')

// '/tmp/tmpy4pgsP/home/guido/foobar.txt'

#if TODO

var given= ds = DataSource('/home/guido');

given= urlname = 'http://www.google.com/index.html';

given= gfile = ds.open('http://www.google.com/index.html') # remote file;

given= ds.abspath(urlname);

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