在Python3中将_wmi_object序列化为JSON

Question

I am having hard time with serializing _wmi_objects . I have tried with just json.dumps() and JsonPickle library without success getting Not JSON serializable errors or with JsonPickle some unneeded fields which can't be removed and null values for every entity.Tried hardcoding every entity in a dict literal and after that json.dumps() and it dumps only the first result. Also tried making the object into a dict which had the result below.

This is what I have until now:

import wmi, json


def to_dict(obj):
    output ={}
    for key, item in obj.__dict__.items():
        if isinstance(item, list):
            l = []
            for item in item:
                d = to_dict(item)
                l.append(d)
            output[key] = l
        else:
            output[key] = item

    return output


c = wmi.WMI(
    computer="host",
    user="user",
    password="password"
)

for product in c.Win32_Product():
     with open('products.json','w') as fp:
         fp.write(json.dumps(to_dict(product)))

With the code above I am getting TypeError: Object of type CDispatch is not JSON serializable

This the data that I'm getting when I print(product) :

instance of Win32_Product
{
        AssignmentType = 1;
        Caption = "Microsoft Visual C++ 2019 X64 Additional Runtime - 14.22.27821";
        Description = "Microsoft Visual C++ 2019 X64 Additional Runtime - 14.22.27821";
};

Answer 1

Since i just ran into this myself:

product is a _wmi_object containing all kind of methods, classes and properties.

The actual data is in the property properties (which already is a dict() )

So something like:

json.dumps(product.properties)

Cheers