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|
__doc__ = u"""
Tests accessing attributes of extension type variables
set to None
"""
cimport cython
cdef class MyClass:
cdef int a, b
def __init__(self, a, b):
self.a = a
self.b = b
@cython.nonecheck(True)
def getattr_(MyClass var):
"""
>>> obj = MyClass(2, 3)
>>> getattr_(obj)
2
>>> getattr_(None)
Traceback (most recent call last):
AttributeError: 'NoneType' object has no attribute 'a'
>>> setattr_(obj)
>>> getattr_(obj)
10
"""
print var.a
@cython.nonecheck(True)
def setattr_(MyClass var):
"""
>>> obj = MyClass(2, 3)
>>> setattr_(obj)
>>> setattr_(None)
Traceback (most recent call last):
AttributeError: 'NoneType' object has no attribute 'a'
"""
var.a = 10
@cython.nonecheck(True)
def getattr_nogil(MyClass var):
"""
>>> getattr_nogil(None)
Traceback (most recent call last):
AttributeError: 'NoneType' object has no attribute 'a'
"""
with nogil:
var.a
@cython.nonecheck(True)
def setattr_nogil(MyClass var):
"""
>>> setattr_nogil(None)
Traceback (most recent call last):
AttributeError: 'NoneType' object has no attribute 'a'
"""
with nogil:
var.a = 1
def some():
return MyClass(4, 5)
@cython.nonecheck(True)
def checking(MyClass var):
"""
>>> obj = MyClass(2, 3)
>>> checking(obj)
2
2
>>> checking(None)
var is None
"""
state = (var is None)
if not state:
print var.a
if var is not None:
print var.a
else:
print u"var is None"
@cython.nonecheck(True)
def check_and_assign(MyClass var):
"""
>>> obj = MyClass(2, 3)
>>> check_and_assign(obj)
Traceback (most recent call last):
AttributeError: 'NoneType' object has no attribute 'a'
"""
if var is not None:
print var.a
var = None
print var.a
@cython.nonecheck(True)
def check_buffer_get(object[int] buf):
"""
>>> check_buffer_get(None)
Traceback (most recent call last):
TypeError: 'NoneType' object is not subscriptable
"""
return buf[0]
@cython.nonecheck(True)
def check_buffer_set(object[int] buf):
"""
>>> check_buffer_set(None)
Traceback (most recent call last):
TypeError: 'NoneType' object is not subscriptable
"""
buf[0] = 1
@cython.nonecheck(True)
def test_memslice_get(double[:] buf):
"""
>>> test_memslice_get(None)
Traceback (most recent call last):
TypeError: Cannot index None memoryview slice
"""
return buf[0]
@cython.nonecheck(True)
def test_memslice_set(double[:] buf):
"""
>>> test_memslice_set(None)
Traceback (most recent call last):
TypeError: Cannot index None memoryview slice
"""
buf[0] = 1.0
@cython.nonecheck(True)
def test_memslice_copy(double[:] buf):
"""
>>> test_memslice_copy(None)
Traceback (most recent call last):
AttributeError: Cannot access 'copy' attribute of None memoryview slice
"""
cdef double[:] copy = buf.copy()
@cython.nonecheck(True)
def test_memslice_transpose(double[:] buf):
"""
>>> test_memslice_transpose(None)
Traceback (most recent call last):
AttributeError: Cannot transpose None memoryview slice
"""
cdef double[:] T = buf.T
@cython.nonecheck(True)
def test_memslice_shape(double[:] buf):
"""
>>> test_memslice_shape(None)
Traceback (most recent call last):
AttributeError: Cannot access 'shape' attribute of None memoryview slice
"""
cdef Py_ssize_t extent = buf.shape[0]
@cython.nonecheck(True)
def test_memslice_slice(double[:] buf):
"""
>>> test_memslice_slice(None)
Traceback (most recent call last):
TypeError: Cannot slice None memoryview slice
"""
cdef double[:] sliced = buf[1:]
@cython.nonecheck(True)
def test_memslice_slice2(double[:] buf):
"""
Should this raise an error? It may not slice at all.
>>> test_memslice_slice(None)
Traceback (most recent call last):
TypeError: Cannot slice None memoryview slice
"""
cdef double[:] sliced = buf[:]
@cython.nonecheck(True)
def test_memslice_slice_assign(double[:] buf):
"""
>>> test_memslice_slice_assign(None)
Traceback (most recent call last):
TypeError: Cannot assign to None memoryview slice
"""
buf[...] = 2
@cython.nonecheck(True)
def test_memslice_slice_assign2(double[:] buf):
"""
>>> test_memslice_slice_assign2(None)
Traceback (most recent call last):
TypeError: Cannot slice None memoryview slice
"""
buf[:] = buf[::-1]
|
