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Add Python < 3.3 support for pyabc.i

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pyabc.i for abstract base classes now supports versions of Python
prior to 3.3 by using the collection module for these older versions.
Python-3.3 and later continue to use the collections.abc module.
The -py3 option no longer has any effect on the %pythonabc feature.
This commit is contained in:
William S Fulton 2022-03-21 23:56:54 +00:00
commit f068f2c2d6
6 changed files with 51 additions and 36 deletions
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31
Examples/test-suite/python/python_abstractbase_runme.py
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@ -1,31 +1,36 @@
import sys
# collections.abc requires Python 3.3+
if sys.version_info[0:2] < (3, 3):
exit(0)
from python_abstractbase import *
import collections.abc
if sys.version_info[0:2] >= (3, 3):
import collections.abc
else:
import collections
# This is expected to fail with -builtin option
# Builtin types can't inherit from pure-python abstract bases
if is_python_builtin():
exit(0)
# Python abc is only turned on when -py3 option is passed to SWIG
if not is_swig_py3:
exit(0)
def check_issubclass(derived, base):
if not issubclass(derived, base):
raise RuntimeError("{} is not a subclass of {}".format(derived, base))
check_issubclass(Mapii, collections.abc.MutableMapping)
check_issubclass(Multimapii, collections.abc.MutableMapping)
check_issubclass(IntSet, collections.abc.MutableSet)
check_issubclass(IntMultiset, collections.abc.MutableSet)
check_issubclass(IntVector, collections.abc.MutableSequence)
check_issubclass(IntList, collections.abc.MutableSequence)
if sys.version_info[0:2] >= (3, 3):
check_issubclass(Mapii, collections.abc.MutableMapping)
check_issubclass(Multimapii, collections.abc.MutableMapping)
check_issubclass(IntSet, collections.abc.MutableSet)
check_issubclass(IntMultiset, collections.abc.MutableSet)
check_issubclass(IntVector, collections.abc.MutableSequence)
check_issubclass(IntList, collections.abc.MutableSequence)
else:
check_issubclass(Mapii, collections.MutableMapping)
check_issubclass(Multimapii, collections.MutableMapping)
check_issubclass(IntSet, collections.MutableSet)
check_issubclass(IntMultiset, collections.MutableSet)
check_issubclass(IntVector, collections.MutableSequence)
check_issubclass(IntList, collections.MutableSequence)
mapii = Mapii()
multimapii = Multimapii()