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from numpy.testing import *
from numpy.core import *
import numpy as np
import sys
from numpy.core.multiarray import _vec_string
class TestBasic(TestCase):
def test_from_object_array(self):
A = np.array([['abc', 2],
['long ', '0123456789']], dtype='O')
B = np.char.array(A)
assert_equal(B.dtype.itemsize, 10)
assert_array_equal(B, [['abc', '2'], ['long', '0123456789']])
def test_from_object_array_unicode(self):
A = np.array([['abc', u'Sigma \u03a3'],
['long ', '0123456789']], dtype='O')
self.failUnlessRaises(ValueError, np.char.array, (A,))
B = np.char.array(A, unicode=True)
assert_equal(B.dtype.itemsize, 10 * np.array('a', 'U').dtype.itemsize)
assert_array_equal(B, [['abc', u'Sigma \u03a3'], ['long', '0123456789']])
def test_from_string_array(self):
A = np.array([['abc', 'foo'],
['long ', '0123456789']])
assert_equal(A.dtype.type, np.string_)
B = np.char.array(A)
assert_array_equal(B, A)
assert_equal(B.dtype, A.dtype)
assert_equal(B.shape, A.shape)
B[0,0] = 'changed'
assert B[0,0] != A[0,0]
C = np.char.asarray(A)
assert_array_equal(C, A)
assert_equal(C.dtype, A.dtype)
C[0,0] = 'changed again'
assert C[0,0] != B[0,0]
assert C[0,0] == A[0,0]
def test_from_unicode_array(self):
A = np.array([['abc', u'Sigma \u03a3'],
['long ', '0123456789']])
assert_equal(A.dtype.type, np.unicode_)
B = np.char.array(A)
assert_array_equal(B, A)
assert_equal(B.dtype, A.dtype)
assert_equal(B.shape, A.shape)
B = np.char.array(A, unicode=True)
assert_array_equal(B, A)
assert_equal(B.dtype, A.dtype)
assert_equal(B.shape, A.shape)
def fail():
B = np.char.array(A, unicode=False)
self.failUnlessRaises(UnicodeEncodeError, fail)
def test_unicode_upconvert(self):
A = np.char.array(['abc'])
B = np.char.array([u'\u03a3'])
assert issubclass((A + B).dtype.type, np.unicode_)
def test_from_string(self):
A = np.char.array('abc')
assert_equal(len(A), 1)
assert_equal(len(A[0]), 3)
assert issubclass(A.dtype.type, np.string_)
def test_from_unicode(self):
A = np.char.array(u'\u03a3')
assert_equal(len(A), 1)
assert_equal(len(A[0]), 1)
assert_equal(A.itemsize, 4)
assert issubclass(A.dtype.type, np.unicode_)
class TestVecString(TestCase):
def test_non_existent_method(self):
def fail():
_vec_string('a', np.string_, 'bogus')
self.failUnlessRaises(AttributeError, fail)
def test_non_string_array(self):
def fail():
_vec_string(1, np.string_, 'strip')
self.failUnlessRaises(TypeError, fail)
def test_invalid_args_tuple(self):
def fail():
_vec_string(['a'], np.string_, 'strip', 1)
self.failUnlessRaises(TypeError, fail)
def test_invalid_type_descr(self):
def fail():
_vec_string(['a'], 'BOGUS', 'strip')
self.failUnlessRaises(TypeError, fail)
def test_invalid_function_args(self):
def fail():
_vec_string(['a'], np.string_, 'strip', (1,))
self.failUnlessRaises(TypeError, fail)
def test_invalid_result_type(self):
def fail():
_vec_string(['a'], np.integer, 'strip')
self.failUnlessRaises(TypeError, fail)
def test_broadcast_error(self):
def fail():
_vec_string([['abc', 'def']], np.integer, 'find', (['a', 'd', 'j'],))
self.failUnlessRaises(ValueError, fail)
class TestWhitespace(TestCase):
def setUp(self):
self.A = np.array([['abc ', '123 '],
['789 ', 'xyz ']]).view(np.chararray)
self.B = np.array([['abc', '123'],
['789', 'xyz']]).view(np.chararray)
def test1(self):
assert all(self.A == self.B)
assert all(self.A >= self.B)
assert all(self.A <= self.B)
assert all(negative(self.A > self.B))
assert all(negative(self.A < self.B))
assert all(negative(self.A != self.B))
class TestChar(TestCase):
def setUp(self):
self.A = np.array('abc1', dtype='c').view(np.chararray)
def test_it(self):
assert_equal(self.A.shape, (4,))
assert_equal(self.A.upper()[:2].tostring(), 'AB')
class TestComparisons(TestCase):
def setUp(self):
self.A = np.array([['abc', '123'],
['789', 'xyz']]).view(np.chararray)
self.B = np.array([['efg', '123 '],
['051', 'tuv']]).view(np.chararray)
def test_not_equal(self):
assert_array_equal((self.A != self.B), [[True, False], [True, True]])
def test_equal(self):
assert_array_equal((self.A == self.B), [[False, True], [False, False]])
def test_greater_equal(self):
assert_array_equal((self.A >= self.B), [[False, True], [True, True]])
def test_less_equal(self):
assert_array_equal((self.A <= self.B), [[True, True], [False, False]])
def test_greater(self):
assert_array_equal((self.A > self.B), [[False, False], [True, True]])
def test_less(self):
assert_array_equal((self.A < self.B), [[True, False], [False, False]])
class TestComparisonsMixed1(TestComparisons):
"""Ticket #1276"""
def setUp(self):
TestComparisons.setUp(self)
self.B = np.array([['efg', '123 '],
['051', 'tuv']], np.unicode_).view(np.chararray)
class TestComparisonsMixed2(TestComparisons):
"""Ticket #1276"""
def setUp(self):
TestComparisons.setUp(self)
self.A = np.array([['abc', '123'],
['789', 'xyz']], np.unicode_).view(np.chararray)
class TestInformation(TestCase):
def setUp(self):
self.A = np.array([[' abc ', ''],
['12345', 'MixedCase'],
['123 \t 345 \0 ', 'UPPER']]).view(np.chararray)
self.B = np.array([[u' \u03a3 ', u''],
[u'12345', u'MixedCase'],
[u'123 \t 345 \0 ', u'UPPER']]).view(np.chararray)
def test_len(self):
assert issubclass(np.char.str_len(self.A).dtype.type, np.integer)
assert_array_equal(np.char.str_len(self.A), [[5, 0], [5, 9], [12, 5]])
assert_array_equal(np.char.str_len(self.B), [[3, 0], [5, 9], [12, 5]])
def test_count(self):
assert issubclass(self.A.count('').dtype.type, np.integer)
assert_array_equal(self.A.count('a'), [[1, 0], [0, 1], [0, 0]])
assert_array_equal(self.A.count('123'), [[0, 0], [1, 0], [1, 0]])
# Python doesn't seem to like counting NULL characters
# assert_array_equal(self.A.count('\0'), [[0, 0], [0, 0], [1, 0]])
assert_array_equal(self.A.count('a', 0, 2), [[1, 0], [0, 0], [0, 0]])
assert_array_equal(self.B.count('a'), [[0, 0], [0, 1], [0, 0]])
assert_array_equal(self.B.count('123'), [[0, 0], [1, 0], [1, 0]])
# assert_array_equal(self.B.count('\0'), [[0, 0], [0, 0], [1, 0]])
def test_endswith(self):
assert issubclass(self.A.endswith('').dtype.type, np.bool_)
assert_array_equal(self.A.endswith(' '), [[1, 0], [0, 0], [1, 0]])
assert_array_equal(self.A.endswith('3', 0, 3), [[0, 0], [1, 0], [1, 0]])
def fail():
self.A.endswith('3', 'fdjk')
self.failUnlessRaises(TypeError, fail)
def test_find(self):
assert issubclass(self.A.find('a').dtype.type, np.integer)
assert_array_equal(self.A.find('a'), [[1, -1], [-1, 6], [-1, -1]])
assert_array_equal(self.A.find('3'), [[-1, -1], [2, -1], [2, -1]])
assert_array_equal(self.A.find('a', 0, 2), [[1, -1], [-1, -1], [-1, -1]])
assert_array_equal(self.A.find(['1', 'P']), [[-1, -1], [0, -1], [0, 1]])
def test_index(self):
def fail():
self.A.index('a')
self.failUnlessRaises(ValueError, fail)
assert np.char.index('abcba', 'b') == 1
assert issubclass(np.char.index('abcba', 'b').dtype.type, np.integer)
def test_isalnum(self):
assert issubclass(self.A.isalnum().dtype.type, np.bool_)
assert_array_equal(self.A.isalnum(), [[False, False], [True, True], [False, True]])
def test_isalpha(self):
assert issubclass(self.A.isalpha().dtype.type, np.bool_)
assert_array_equal(self.A.isalpha(), [[False, False], [False, True], [False, True]])
def test_isdigit(self):
assert issubclass(self.A.isdigit().dtype.type, np.bool_)
assert_array_equal(self.A.isdigit(), [[False, False], [True, False], [False, False]])
def test_islower(self):
assert issubclass(self.A.islower().dtype.type, np.bool_)
assert_array_equal(self.A.islower(), [[True, False], [False, False], [False, False]])
def test_isspace(self):
assert issubclass(self.A.isspace().dtype.type, np.bool_)
assert_array_equal(self.A.isspace(), [[False, False], [False, False], [False, False]])
def test_istitle(self):
assert issubclass(self.A.istitle().dtype.type, np.bool_)
assert_array_equal(self.A.istitle(), [[False, False], [False, False], [False, False]])
def test_isupper(self):
assert issubclass(self.A.isupper().dtype.type, np.bool_)
assert_array_equal(self.A.isupper(), [[False, False], [False, False], [False, True]])
def test_rfind(self):
assert issubclass(self.A.rfind('a').dtype.type, np.integer)
assert_array_equal(self.A.rfind('a'), [[1, -1], [-1, 6], [-1, -1]])
assert_array_equal(self.A.rfind('3'), [[-1, -1], [2, -1], [6, -1]])
assert_array_equal(self.A.rfind('a', 0, 2), [[1, -1], [-1, -1], [-1, -1]])
assert_array_equal(self.A.rfind(['1', 'P']), [[-1, -1], [0, -1], [0, 2]])
def test_rindex(self):
def fail():
self.A.rindex('a')
self.failUnlessRaises(ValueError, fail)
assert np.char.rindex('abcba', 'b') == 3
assert issubclass(np.char.rindex('abcba', 'b').dtype.type, np.integer)
def test_startswith(self):
assert issubclass(self.A.startswith('').dtype.type, np.bool_)
assert_array_equal(self.A.startswith(' '), [[1, 0], [0, 0], [0, 0]])
assert_array_equal(self.A.startswith('1', 0, 3), [[0, 0], [1, 0], [1, 0]])
def fail():
self.A.startswith('3', 'fdjk')
self.failUnlessRaises(TypeError, fail)
class TestMethods(TestCase):
def setUp(self):
self.A = np.array([[' abc ', ''],
['12345', 'MixedCase'],
['123 \t 345 \0 ', 'UPPER']]).view(np.chararray)
self.B = np.array([[u' \u03a3 ', u''],
[u'12345', u'MixedCase'],
[u'123 \t 345 \0 ', u'UPPER']]).view(np.chararray)
def test_capitalize(self):
assert issubclass(self.A.capitalize().dtype.type, np.string_)
assert_array_equal(self.A.capitalize(), [
[' abc ', ''],
['12345', 'Mixedcase'],
['123 \t 345 \0 ', 'Upper']])
assert issubclass(self.B.capitalize().dtype.type, np.unicode_)
assert_array_equal(self.B.capitalize(), [
[u' \u03c3 ', ''],
['12345', 'Mixedcase'],
['123 \t 345 \0 ', 'Upper']])
def test_center(self):
assert issubclass(self.A.center(10).dtype.type, np.string_)
widths = np.array([[10, 20]])
C = self.A.center([10, 20])
assert_array_equal(np.char.str_len(C), [[10, 20], [10, 20], [12, 20]])
C = self.A.center(20, '#')
assert np.all(C.startswith('#'))
assert np.all(C.endswith('#'))
C = np.char.center('FOO', [[10, 20], [15, 8]])
assert issubclass(C.dtype.type, np.string_)
assert_array_equal(C, [
[' FOO ', ' FOO '],
[' FOO ', ' FOO ']])
def test_decode(self):
A = np.char.array(['736563726574206d657373616765'])
assert A.decode('hex_codec')[0] == 'secret message'
def test_encode(self):
B = self.B.encode('unicode_escape')
assert B[0][0] == r' \u03a3 '
def test_expandtabs(self):
T = self.A.expandtabs()
assert T[2][0] == '123 345'
def test_join(self):
A = np.char.join([',', '#'], self.A)
assert issubclass(A.dtype.type, np.string_)
assert_array_equal(np.char.join([',', '#'], self.A), [
[' ,a,b,c, ', ''],
['1,2,3,4,5', 'M#i#x#e#d#C#a#s#e'],
['1,2,3, ,\t, ,3,4,5, ,\x00, ', 'U#P#P#E#R']])
def test_ljust(self):
assert issubclass(self.A.ljust(10).dtype.type, np.string_)
widths = np.array([[10, 20]])
C = self.A.ljust([10, 20])
assert_array_equal(np.char.str_len(C), [[10, 20], [10, 20], [12, 20]])
C = self.A.ljust(20, '#')
assert_array_equal(C.startswith('#'), [
[False, True], [False, False], [False, False]])
assert np.all(C.endswith('#'))
C = np.char.ljust('FOO', [[10, 20], [15, 8]])
assert issubclass(C.dtype.type, np.string_)
assert_array_equal(C, [
['FOO ', 'FOO '],
['FOO ', 'FOO ']])
def test_lower(self):
assert issubclass(self.A.lower().dtype.type, np.string_)
assert_array_equal(self.A.lower(), [
[' abc ', ''],
['12345', 'mixedcase'],
['123 \t 345 \0 ', 'upper']])
assert issubclass(self.B.lower().dtype.type, np.unicode_)
assert_array_equal(self.B.lower(), [
[u' \u03c3 ', u''],
[u'12345', u'mixedcase'],
[u'123 \t 345 \0 ', u'upper']])
def test_lstrip(self):
assert issubclass(self.A.lstrip().dtype.type, np.string_)
assert_array_equal(self.A.lstrip(), [
['abc ', ''],
['12345', 'MixedCase'],
['123 \t 345 \0 ', 'UPPER']])
assert_array_equal(self.A.lstrip(['1', 'M']), [
[' abc', ''],
['2345', 'ixedCase'],
['23 \t 345 \x00', 'UPPER']])
assert issubclass(self.B.lstrip().dtype.type, np.unicode_)
assert_array_equal(self.B.lstrip(), [
[u'\u03a3 ', ''],
['12345', 'MixedCase'],
['123 \t 345 \0 ', 'UPPER']])
def test_partition(self):
if sys.version_info >= (2, 5):
P = self.A.partition(['3', 'M'])
assert issubclass(P.dtype.type, np.string_)
assert_array_equal(P, [
[(' abc ', '', ''), ('', '', '')],
[('12', '3', '45'), ('', 'M', 'ixedCase')],
[('12', '3', ' \t 345 \0 '), ('UPPER', '', '')]])
def test_replace(self):
R = self.A.replace(['3', 'a'], ['##########', '@'])
assert issubclass(R.dtype.type, np.string_)
assert_array_equal(R, [
[' abc ', ''],
['12##########45', 'MixedC@se'],
['12########## \t ##########45 \x00', 'UPPER']])
R = self.A.replace('a', u'\u03a3')
assert issubclass(R.dtype.type, np.unicode_)
assert_array_equal(R, [
[u' \u03a3bc ', ''],
['12345', u'MixedC\u03a3se'],
['123 \t 345 \x00', 'UPPER']])
def test_rjust(self):
assert issubclass(self.A.rjust(10).dtype.type, np.string_)
widths = np.array([[10, 20]])
C = self.A.rjust([10, 20])
assert_array_equal(np.char.str_len(C), [[10, 20], [10, 20], [12, 20]])
C = self.A.rjust(20, '#')
assert np.all(C.startswith('#'))
assert_array_equal(C.endswith('#'), [[False, True], [False, False], [False, False]])
C = np.char.rjust('FOO', [[10, 20], [15, 8]])
assert issubclass(C.dtype.type, np.string_)
assert_array_equal(C, [
[' FOO', ' FOO'],
[' FOO', ' FOO']])
def test_rpartition(self):
if sys.version_info >= (2, 5):
P = self.A.rpartition(['3', 'M'])
assert issubclass(P.dtype.type, np.string_)
assert_array_equal(P, [
[('', '', ' abc '), ('', '', '')],
[('12', '3', '45'), ('', 'M', 'ixedCase')],
[('123 \t ', '3', '45 \0 '), ('', '', 'UPPER')]])
def test_rsplit(self):
A = self.A.rsplit('3')
assert issubclass(A.dtype.type, np.object_)
assert_equal(A.tolist(), [
[[' abc '], ['']],
[['12', '45'], ['MixedCase']],
[['12', ' \t ', '45 \x00 '], ['UPPER']]])
def test_rstrip(self):
assert issubclass(self.A.rstrip().dtype.type, np.string_)
assert_array_equal(self.A.rstrip(), [
[' abc', ''],
['12345', 'MixedCase'],
['123 \t 345', 'UPPER']])
assert_array_equal(self.A.rstrip(['5', 'ER']), [
[' abc ', ''],
['1234', 'MixedCase'],
['123 \t 345 \x00', 'UPP']])
assert issubclass(self.B.rstrip().dtype.type, np.unicode_)
assert_array_equal(self.B.rstrip(), [
[u' \u03a3', ''],
['12345', 'MixedCase'],
['123 \t 345', 'UPPER']])
def test_strip(self):
assert issubclass(self.A.strip().dtype.type, np.string_)
assert_array_equal(self.A.strip(), [
['abc', ''],
['12345', 'MixedCase'],
['123 \t 345', 'UPPER']])
assert_array_equal(self.A.strip(['15', 'EReM']), [
[' abc ', ''],
['234', 'ixedCas'],
['23 \t 345 \x00', 'UPP']])
assert issubclass(self.B.strip().dtype.type, np.unicode_)
assert_array_equal(self.B.strip(), [
[u'\u03a3', ''],
['12345', 'MixedCase'],
['123 \t 345', 'UPPER']])
def test_split(self):
A = self.A.split('3')
assert issubclass(A.dtype.type, np.object_)
assert_equal(A.tolist(), [
[[' abc '], ['']],
[['12', '45'], ['MixedCase']],
[['12', ' \t ', '45 \x00 '], ['UPPER']]])
def test_splitlines(self):
A = np.char.array(['abc\nfds\nwer']).splitlines()
assert issubclass(A.dtype.type, np.object_)
assert A.shape == (1,)
assert len(A[0]) == 3
def test_swapcase(self):
assert issubclass(self.A.swapcase().dtype.type, np.string_)
assert_array_equal(self.A.swapcase(), [
[' ABC ', ''],
['12345', 'mIXEDcASE'],
['123 \t 345 \0 ', 'upper']])
assert issubclass(self.B.swapcase().dtype.type, np.unicode_)
assert_array_equal(self.B.swapcase(), [
[u' \u03c3 ', u''],
[u'12345', u'mIXEDcASE'],
[u'123 \t 345 \0 ', u'upper']])
def test_title(self):
assert issubclass(self.A.title().dtype.type, np.string_)
assert_array_equal(self.A.title(), [
[' Abc ', ''],
['12345', 'Mixedcase'],
['123 \t 345 \0 ', 'Upper']])
assert issubclass(self.B.title().dtype.type, np.unicode_)
assert_array_equal(self.B.title(), [
[u' \u03a3 ', u''],
[u'12345', u'Mixedcase'],
[u'123 \t 345 \0 ', u'Upper']])
def test_upper(self):
assert issubclass(self.A.upper().dtype.type, np.string_)
assert_array_equal(self.A.upper(), [
[' ABC ', ''],
['12345', 'MIXEDCASE'],
['123 \t 345 \0 ', 'UPPER']])
assert issubclass(self.B.upper().dtype.type, np.unicode_)
assert_array_equal(self.B.upper(), [
[u' \u03a3 ', u''],
[u'12345', u'MIXEDCASE'],
[u'123 \t 345 \0 ', u'UPPER']])
def test_isnumeric(self):
def fail():
self.A.isnumeric()
self.failUnlessRaises(TypeError, fail)
assert issubclass(self.B.isnumeric().dtype.type, np.bool_)
assert_array_equal(self.B.isnumeric(), [
[False, False], [True, False], [False, False]])
def test_isdecimal(self):
def fail():
self.A.isdecimal()
self.failUnlessRaises(TypeError, fail)
assert issubclass(self.B.isdecimal().dtype.type, np.bool_)
assert_array_equal(self.B.isdecimal(), [
[False, False], [True, False], [False, False]])
class TestOperations(TestCase):
def setUp(self):
self.A = np.array([['abc', '123'],
['789', 'xyz']]).view(np.chararray)
self.B = np.array([['efg', '456'],
['051', 'tuv']]).view(np.chararray)
def test_add(self):
AB = np.array([['abcefg', '123456'],
['789051', 'xyztuv']]).view(np.chararray)
assert_array_equal(AB, (self.A + self.B))
assert len((self.A + self.B)[0][0]) == 6
def test_radd(self):
QA = np.array([['qabc', 'q123'],
['q789', 'qxyz']]).view(np.chararray)
assert_array_equal(QA, ('q' + self.A))
def test_mul(self):
A = self.A
for r in (2,3,5,7,197):
Ar = np.array([[A[0,0]*r, A[0,1]*r],
[A[1,0]*r, A[1,1]*r]]).view(np.chararray)
assert_array_equal(Ar, (self.A * r))
for ob in [object(), 'qrs']:
try:
A * ob
except ValueError:
pass
else:
self.fail("chararray can only be multiplied by integers")
def test_rmul(self):
A = self.A
for r in (2,3,5,7,197):
Ar = np.array([[A[0,0]*r, A[0,1]*r],
[A[1,0]*r, A[1,1]*r]]).view(np.chararray)
assert_array_equal(Ar, (r * self.A))
for ob in [object(), 'qrs']:
try:
ob * A
except ValueError:
pass
else:
self.fail("chararray can only be multiplied by integers")
def test_mod(self):
"""Ticket #856"""
F = np.array([['%d', '%f'],['%s','%r']]).view(np.chararray)
C = np.array([[3,7],[19,1]])
FC = np.array([['3', '7.000000'],
['19', '1']]).view(np.chararray)
assert_array_equal(FC, F % C)
A = np.array([['%.3f','%d'],['%s','%r']]).view(np.chararray)
A1 = np.array([['1.000','1'],['1','1']]).view(np.chararray)
assert_array_equal(A1, (A % 1))
A2 = np.array([['1.000','2'],['3','4']]).view(np.chararray)
assert_array_equal(A2, (A % [[1,2],[3,4]]))
def test_rmod(self):
assert ("%s" % self.A) == str(self.A)
assert ("%r" % self.A) == repr(self.A)
for ob in [42, object()]:
try:
ob % self.A
except TypeError:
pass
else:
self.fail("chararray __rmod__ should fail with " \
"non-string objects")
if __name__ == "__main__":
run_module_suite()
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