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|
# ticket: t561
# tag: py2
# This file tests the behavior of special methods under Python 2
# after #561. (Only methods whose behavior differs between Python 2 and 3
# are tested here; see special_methods_T561.pyx for the rest of the tests.)
__doc__ = u"""
>>> vs0 = VerySpecial(0)
VS __init__ 0
>>> vs1 = VerySpecial(1)
VS __init__ 1
>>> # Python 3 does not use __cmp__.
>>> vs0_cmp = vs0.__cmp__
>>> vs0_cmp(vs1)
VS __cmp__ 0 1
0
>>> # Python 3 does not use __div__ or __idiv__.
>>> vs0_div = vs0.__div__
>>> vs0_div(vs1)
VS __div__ 0 1
>>> vs0_idiv = vs0.__idiv__
>>> vs0_idiv(vs1)
VS __idiv__ 0 /= 1
>>> vs0_rdiv = vs0.__rdiv__
>>> vs0_rdiv(vs1)
VS __div__ 1 0
>>> # Python 3 does not use __oct__ or __hex__.
>>> vs0_oct = vs0.__oct__
>>> vs0_oct()
VS __oct__ 0
>>> vs0_hex = vs0.__hex__
>>> vs0_hex()
VS __hex__ 0
>>> # Python 3 does not use __nonzero__; if you define a __nonzero__
>>> # method, Cython for Python 3 would give you a __bool__ method
>>> # instead.
>>> vs0_nonzero = vs0.__nonzero__
>>> vs0_nonzero()
VS __nonzero__ 0
False
>>> # If you define __next__, you get both __next__ and next (this behavior
>>> # is unchanged by T561, but only happens in Python 2)
>>> vs0_next = vs0.__next__
>>> vs0_next()
VS next/__next__ 0
>>> vs0_next2 = vs0.next
>>> vs0_next2()
VS next/__next__ 0
>>> # Cython supports getslice only for Python 2.
>>> vs0_getslice = vs0.__getslice__
>>> vs0_getslice(13, 42)
VS __getslice__ 0 13 42
>>> # Cython supports setslice and delslice only for Python 2.
>>> # If you define either setslice or delslice, you get wrapper objects
>>> # for both methods. (This behavior is unchanged by #561.)
>>> ss_setslice = SetSlice().__setslice__
>>> ss_setslice(13, 42, 'foo')
SetSlice setslice 13 42 'foo'
>>> ss_delslice = SetSlice().__delslice__
>>> ss_delslice(13, 42)
Traceback (most recent call last):
...
NotImplementedError: 2-element slice deletion not supported by special_methods_T561_py2.SetSlice
>>> ds_setslice = DelSlice().__setslice__
>>> ds_setslice(13, 42, 'foo')
Traceback (most recent call last):
...
NotImplementedError: 2-element slice assignment not supported by special_methods_T561_py2.DelSlice
>>> ds_delslice = DelSlice().__delslice__
>>> ds_delslice(13, 42)
DelSlice delslice 13 42
>>> sds_setslice = SetDelSlice().__setslice__
>>> sds_setslice(13, 42, 'foo')
SetDelSlice setslice 13 42 'foo'
>>> sds_delslice = SetDelSlice().__delslice__
>>> sds_delslice(13, 42)
SetDelSlice delslice 13 42
>>> # Python 3 does not use __long__.
>>> Ll = Long().__long__
>>> Ll()
Long __long__
"""
cdef class VerySpecial:
cdef readonly int value
def __init__(self, v):
self.value = v
print "VS __init__ %d" % self.value
def __getslice__(self, a, b):
print "VS __getslice__ %d %d %d" % (self.value, a, b)
def __next__(self):
print "VS next/__next__ %d" % self.value
def __nonzero__(self):
print "VS __nonzero__ %d" % self.value
def __oct__(self):
print "VS __oct__ %d" % self.value
def __hex__(self):
print "VS __hex__ %d" % self.value
def __cmp__(self, other):
print "VS __cmp__ %d %d" % (self.value, other.value)
def __div__(self, other):
print "VS __div__ %d %d" % (self.value, other.value)
def __idiv__(self, other):
print "VS __idiv__ %d /= %d" % (self.value, other.value)
cdef class SetSlice:
def __setslice__(self, a, b, value):
print "SetSlice setslice %d %d %r" % (a, b, value)
cdef class DelSlice:
def __delslice__(self, a, b):
print "DelSlice delslice %d %d" % (a, b)
cdef class SetDelSlice:
def __setslice__(self, a, b, value):
print "SetDelSlice setslice %d %d %r" % (a, b, value)
def __delslice__(self, a, b):
print "SetDelSlice delslice %d %d" % (a, b)
cdef class Long:
def __long__(self):
print "Long __long__"
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