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Stricter coversion of primitive Python types to `System.Object` by lostmsu · Pull Request #1958 · pythonnet/pythonnet · GitHub

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Stricter coversion of primitive Python types to System.Object #1958

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Stricter coversion of primitive Python types to System.Object #1958

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20 changes: 20 additions & 0 deletions src/embed_tests/TestConverter.cs
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Original file line number Diff line number Diff line change
Expand Up @@ -132,6 +132,26 @@ public void ToNullable()
Assert.AreEqual(Const, ni);
}

[Test]
public void DerivedFloatIsNotFloat()
{
using var scope = Py.CreateScope();
scope.Exec(@"class DerivedFloat(float): pass");
using var derivedFloat = scope.Eval("DerivedFloat(42.0)");
object dotnetValue = derivedFloat.As<object>();
Assert.IsInstanceOf<PyObject>(dotnetValue);
}

[Test]
public void DerivedIntIsNotInt()
{
using var scope = Py.CreateScope();
scope.Exec(@"class DerivedInt(int): pass");
using var derivedInt = scope.Eval("DerivedInt(42)");
object dotnetValue = derivedInt.As<object>();
Assert.IsInstanceOf<PyObject>(dotnetValue);
}

[Test]
public void BigIntExplicit()
{
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6 changes: 3 additions & 3 deletions src/runtime/Converter.cs
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Original file line number Diff line number Diff line change
Expand Up @@ -361,17 +361,17 @@ internal static bool ToManagedValue(BorrowedReference value, Type obType,
// conversions (Python string -> managed string).
if (obType == objectType)
{
if (Runtime.PyString_Check(value))
if (Runtime.PyString_CheckExact(value))
{
return ToPrimitive(value, stringType, out result, setError);
}

if (Runtime.PyBool_Check(value))
if (Runtime.PyBool_CheckExact(value))
{
return ToPrimitive(value, boolType, out result, setError);
}

if (Runtime.PyFloat_Check(value))
if (Runtime.PyFloat_CheckExact(value))
{
return ToPrimitive(value, doubleType, out result, setError);
}
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15 changes: 12 additions & 3 deletions src/runtime/Runtime.cs
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Original file line number Diff line number Diff line change
Expand Up @@ -1094,8 +1094,13 @@ internal static nint PyBuffer_SizeFromFormat(string format)
internal static bool PyInt_Check(BorrowedReference ob)
=> PyObject_TypeCheck(ob, PyLongType);

internal static bool PyInt_CheckExact(BorrowedReference ob)
=> PyObject_TypeCheckExact(ob, PyLongType);

internal static bool PyBool_Check(BorrowedReference ob)
=> PyObject_TypeCheck(ob, PyBoolType);
internal static bool PyBool_CheckExact(BorrowedReference ob)
=> PyObject_TypeCheckExact(ob, PyBoolType);

internal static NewReference PyInt_FromInt32(int value) => PyLong_FromLongLong(value);

Expand Down Expand Up @@ -1141,6 +1146,8 @@ internal static NewReference PyLong_FromString(string value, int radix)

internal static bool PyFloat_Check(BorrowedReference ob)
=> PyObject_TypeCheck(ob, PyFloatType);
internal static bool PyFloat_CheckExact(BorrowedReference ob)
=> PyObject_TypeCheckExact(ob, PyFloatType);

/// <summary>
/// Return value: New reference.
Expand Down Expand Up @@ -1282,9 +1289,9 @@ internal static bool PyFloat_Check(BorrowedReference ob)
// Python string API
//====================================================================
internal static bool PyString_Check(BorrowedReference ob)
{
return PyObject_TYPE(ob) == PyStringType;
}
=> PyObject_TypeCheck(ob, PyStringType);
internal static bool PyString_CheckExact(BorrowedReference ob)
=> PyObject_TypeCheckExact(ob, PyStringType);

internal static NewReference PyString_FromString(string value)
{
Expand Down Expand Up @@ -1643,6 +1650,8 @@ internal static bool PyType_IsSubtype(BorrowedReference t1, BorrowedReference t2
return Delegates.PyType_IsSubtype(t1, t2);
}

internal static bool PyObject_TypeCheckExact(BorrowedReference ob, BorrowedReference tp)
=> PyObject_TYPE(ob) == tp;
internal static bool PyObject_TypeCheck(BorrowedReference ob, BorrowedReference tp)
{
BorrowedReference t = PyObject_TYPE(ob);
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