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Update copy.py and test_copy.py from CPython v3.12 #5175

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Merged
merged 2 commits into from
Feb 21, 2024
Merged

Update copy.py and test_copy.py from CPython v3.12 #5175

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36a36b2
Update copy.py from CPython v3.12.0
Blues-star Feb 20, 2024
83b8c3a
Update test_copy.py from CPython v3.12.0
Blues-star Feb 20, 2024
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28 changes: 8 additions & 20 deletions Lib/copy.py
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Original file line number Diff line number Diff line change
Expand Up @@ -56,11 +56,6 @@ class Error(Exception):
pass
error = Error # backward compatibility

try:
from org.python.core import PyStringMap
except ImportError:
PyStringMap = None

__all__ = ["Error", "copy", "deepcopy"]

def copy(x):
Expand Down Expand Up @@ -106,23 +101,18 @@ def copy(x):

def _copy_immutable(x):
return x
for t in (type(None), int, float, bool, complex, str, tuple,
for t in (types.NoneType, int, float, bool, complex, str, tuple,
bytes, frozenset, type, range, slice, property,
types.BuiltinFunctionType, type(Ellipsis), type(NotImplemented),
types.FunctionType, weakref.ref):
d[t] = _copy_immutable
t = getattr(types, "CodeType", None)
if t is not None:
types.BuiltinFunctionType, types.EllipsisType,
types.NotImplementedType, types.FunctionType, types.CodeType,
weakref.ref):
d[t] = _copy_immutable

d[list] = list.copy
d[dict] = dict.copy
d[set] = set.copy
d[bytearray] = bytearray.copy

if PyStringMap is not None:
d[PyStringMap] = PyStringMap.copy

del d, t

def deepcopy(x, memo=None, _nil=[]):
Expand Down Expand Up @@ -181,9 +171,9 @@ def deepcopy(x, memo=None, _nil=[]):

def _deepcopy_atomic(x, memo):
return x
d[type(None)] = _deepcopy_atomic
d[type(Ellipsis)] = _deepcopy_atomic
d[type(NotImplemented)] = _deepcopy_atomic
d[types.NoneType] = _deepcopy_atomic
d[types.EllipsisType] = _deepcopy_atomic
d[types.NotImplementedType] = _deepcopy_atomic
d[int] = _deepcopy_atomic
d[float] = _deepcopy_atomic
d[bool] = _deepcopy_atomic
Expand Down Expand Up @@ -231,8 +221,6 @@ def _deepcopy_dict(x, memo, deepcopy=deepcopy):
y[deepcopy(key, memo)] = deepcopy(value, memo)
return y
d[dict] = _deepcopy_dict
if PyStringMap is not None:
d[PyStringMap] = _deepcopy_dict

def _deepcopy_method(x, memo): # Copy instance methods
return type(x)(x.__func__, deepcopy(x.__self__, memo))
Expand Down Expand Up @@ -301,4 +289,4 @@ def _reconstruct(x, memo, func, args,
y[key] = value
return y

del types, weakref, PyStringMap
del types, weakref
12 changes: 4 additions & 8 deletions Lib/test/test_copy.py
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Original file line number Diff line number Diff line change
Expand Up @@ -91,9 +91,7 @@ def __getattribute__(self, name):
# Type-specific _copy_xxx() methods

def test_copy_atomic(self):
class Classic:
pass
class NewStyle(object):
class NewStyle:
pass
def f():
pass
Expand All @@ -103,7 +101,7 @@ class WithMetaclass(metaclass=abc.ABCMeta):
42, 2**100, 3.14, True, False, 1j,
"hello", "hello\u1234", f.__code__,
b"world", bytes(range(256)), range(10), slice(1, 10, 2),
NewStyle, Classic, max, WithMetaclass, property()]
NewStyle, max, WithMetaclass, property()]
for x in tests:
self.assertIs(copy.copy(x), x)

Expand Down Expand Up @@ -358,15 +356,13 @@ def __getattribute__(self, name):
# Type-specific _deepcopy_xxx() methods

def test_deepcopy_atomic(self):
class Classic:
pass
class NewStyle(object):
class NewStyle:
pass
def f():
pass
tests = [None, ..., NotImplemented, 42, 2**100, 3.14, True, False, 1j,
b"bytes", "hello", "hello\u1234", f.__code__,
NewStyle, range(10), Classic, max, property()]
NewStyle, range(10), max, property()]
for x in tests:
self.assertIs(copy.deepcopy(x), x)

Expand Down