Java equivalent to Python containers

[MustafaHalimehHH]

Hi,
I am trying to parse a return dict type from python in java, and I tried different things in chaquopy to get the equivalent for dict object but all of them failed.
pyobject.keySet(): returns different keys (I thing the data members of the dict class).
Also the dict contains different types like ({name='name', age='25', boss='False'}), I did not find any code sample to how use the dict in the demo source code.
So how I can use the dict Python object in java.
Thanks.

[mhsmith]

You should be able to use the dict by calling its Python methods using callAttr. For example:

PyObject d = /* something returning the dict described above */;
String name = d.callAttr("get", "name").toString();
int age = d.callAttr("get", "age").toJava(int.class);

Or to iterate through the dict:

PyObject keys = py.getBuiltins().callAttr("list", d.callAttr("keys"));
int len = keys.callAttr("__len__").toJava(int.class);
for (int i = 0; i < len; i++) {
    String key = keys.callAttr("__getitem__", i).toString();
    String value = d.callAttr("get", key).toString(); // or .toJava(...)
}

Of course it would be much easier if we could access Python containers through the corresponding Java interfaces. We may implement that in the future, so let's leave this issue open to track it.

[mhsmith]

Chaquopy 5.1.2 adds the following methods to PyObject:

• asList
• asMap
• asSet