Howdy;

I'm trying to extend my Python program with D, but I'm having trouble accessing a D class's field/attribute/property/something.

My D file looks like this:

```
module simpletest;
import pyd.pyd;
import std.stdio;

class ExampleTest{
	int _a = 3;
	int a(){
		return _a;
	}
	void a(int a){
		this._a = a;
	}
	int b = 4;
}

extern(C) void PydMain() {
	module_init();
	wrap_class!(
		ExampleTest,
		Property!(ExampleTest.a),
		Property!(ExampleTest.b)
		// Member!("b")
	);
}

```

and my Python file looks like this:

```
#!/usr/bin/env python3.7
# -*- coding: utf-8 -*-
"""Run with `pipenv run pytest -s tests/test_simple_test.py`."""
import simpletest


def test_class():
	test = simpletest.ExampleTest()
	assert None is print(test.a)
	assert test.a == 3
	test.a = 2
	assert test.a == 2
	assert None is print(test.b)
```

The first field, `a`, I can read, but `attribute 'b' of 'simpletest.ExampleTest' objects is not readable`. `a` has a getter and setter function; do I have to make getters and setters for all fields I want to share with Python? That sounds like a lot of wasted space if so. The only examples at the Github (https://github.com/ariovistus/pyd/tree/master/examples) only seem to show it with getters and setters.

On Monday, 18 March 2019 at 22:25:10 UTC, clothlen wrote:
> Howdy;
>
> I'm trying to extend my Python program with D, but I'm having trouble accessing a D class's field/attribute/property/something.
>
> My D file looks like this:
>
> ```
> module simpletest;
> import pyd.pyd;
> import std.stdio;
>
> class ExampleTest{
> 	int _a = 3;
> 	int a(){
> 		return _a;
> 	}
> 	void a(int a){
> 		this._a = a;
> 	}
> 	int b = 4;
> }
>
> extern(C) void PydMain() {
> 	module_init();
> 	wrap_class!(
> 		ExampleTest,
> 		Property!(ExampleTest.a),
> 		Property!(ExampleTest.b)
> 		// Member!("b")

Maybe you need `Member!(“b”, “rw”)`?

> 	);
> }

If that doesn’t work, maybe you find help by filing an issue on PyD.

On Tuesday, 19 March 2019 at 23:58:48 UTC, Bastiaan Veelo wrote:
> On Monday, 18 March 2019 at 22:25:10 UTC, clothlen wrote:
>> Howdy;
>>
>> I'm trying to extend my Python program with D, but I'm having trouble accessing a D class's field/attribute/property/something.
>>
>> My D file looks like this:
>>
>> ```
>> module simpletest;
>> import pyd.pyd;
>> import std.stdio;
>>
>> class ExampleTest{
>> 	int _a = 3;
>> 	int a(){
>> 		return _a;
>> 	}
>> 	void a(int a){
>> 		this._a = a;
>> 	}
>> 	int b = 4;
>> }
>>
>> extern(C) void PydMain() {
>> 	module_init();
>> 	wrap_class!(
>> 		ExampleTest,
>> 		Property!(ExampleTest.a),
>> 		Property!(ExampleTest.b)
>> 		// Member!("b")
>
> Maybe you need `Member!(“b”, “rw”)`?
>
>> 	);
>> }
>
> If that doesn’t work, maybe you find help by filing an issue on PyD.

I filed the issue here (still no response yet):

https://github.com/ariovistus/pyd/issues/152


Just tried:
```
     Member!("m_i", Mode!"rw"),
```

Still the same error:

```
/usr/local/lib/python3.6/dist-packages/pyd/infrastructure/pyd/make_wrapper.d(127): Error: no property shim for type pyd.struct_wrap.Member!("m_i", Mode!"rw")
/usr/local/lib/python3.6/dist-packages/pyd/infrastructure/pyd/make_wrapper.d(137): Error: template instance pyd.make_wrapper.class_decls!(0u, Foo, Member!("m_i", Mode!"rw"), Init!int, Init!(int, int), Property!(i, Docstring!"A sample property of Foo."), BinaryOperatorX!("+", false, Guess), Def!(opSlice, PyName!"__iter__", Range function()), Def!(foo, Docstring!"A sample method of Foo."), Def!(a), Def!(b), Def!(c), Def!(d), Def!(e),
 Def!(f), Def!(g), Def!(h), Def!(j), Def!(k), Def!(l), Def!(m), Def!(n)) error instantiating
```


Anyone know how to expose D class data member to Python?


Thanks!

On Monday, 17 May 2021 at 16:54:07 UTC, mw wrote:
> On Tuesday, 19 March 2019 at 23:58:48 UTC, Bastiaan Veelo wrote:
>> [...]
>
> I filed the issue here (still no response yet):
>
> https://github.com/ariovistus/pyd/issues/152
>
> [...]

https://github.com/symmetryinvestments/autowrap

On Monday, 17 May 2021 at 17:16:27 UTC, Imperatorn wrote:
> On Monday, 17 May 2021 at 16:54:07 UTC, mw wrote:
>> On Tuesday, 19 March 2019 at 23:58:48 UTC, Bastiaan Veelo wrote:
>>> [...]
>>
>> I filed the issue here (still no response yet):
>>
>> https://github.com/ariovistus/pyd/issues/152
>>
>> [...]
>
> https://github.com/symmetryinvestments/autowrap

Thanks, I just tried, but still cannot get access to class field:

I build this example:

https://github.com/symmetryinvestments/autowrap/tree/master/examples/pyd

and test this:

https://github.com/symmetryinvestments/autowrap/blob/master/examples/pyd/source/class_wrap.d
class Bizzy {
    int _m;
    ...
}


```
$ dub build --config=python36

$ ln -s lib/pyd/libpydtests.so pyd.so

$ python3
>>> import pyd
>>> b = pyd.Bizzy(0)
>>> b
bye(0)
>>> b._m = 3
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
AttributeError: 'pyd.Bizzy' object has no attribute '_m'
```

Add `public` does not work either:
```
class Bizzy {
    public int _m;
    ...
}

```

Any hints?

On Monday, 17 May 2021 at 16:54:07 UTC, mw wrote:
> I filed the issue here (still no response yet):
>
> https://github.com/ariovistus/pyd/issues/152

It's fixed now: pyd version >= 0.14.1

On Tuesday, 18 May 2021 at 23:27:40 UTC, mw wrote:
> On Monday, 17 May 2021 at 16:54:07 UTC, mw wrote:
>> I filed the issue here (still no response yet):
>>
>> https://github.com/ariovistus/pyd/issues/152
>
> It's fixed now: pyd version >= 0.14.1

👍