[Python] QML ListView sections from the code

I am unable to implement listview with sections. I've successfully repeated an example from Qt documentation but there is ListModel used which works okay, but not a var.

How it works with example:

ListView {
width: 100
height: 100
id: listview
model: ListModel {
id: animalsModel
ListElement { name: "Ant"; size: "Tiny" }
ListElement { name: "Flea"; size: "Tiny" }
ListElement { name: "Parrot"; size: "Small" }
ListElement { name: "Guinea pig"; size: "Small" }
ListElement { name: "Rat"; size: "Small" }
ListElement { name: "Butterfly"; size: "Small" }
ListElement { name: "Dog"; size: "Medium" }
ListElement { name: "Cat"; size: "Medium" }
ListElement { name: "Pony"; size: "Medium" }
ListElement { name: "Koala"; size: "Medium" }
ListElement { name: "Horse"; size: "Large" }
ListElement { name: "Tiger"; size: "Large" }
ListElement { name: "Giraffe"; size: "Large" }
ListElement { name: "Elephant"; size: "Huge" }
ListElement { name: "Whale"; size: "Huge" }
}

delegate: Text { text: name; font.pixelSize: 18 }

section.property: "size"
section.criteria: ViewSection.FullString
section.delegate: Component {
id: sectionHeading
Rectangle {
width: container.width
height: childrenRect.height
color: "lightsteelblue"

Text {
text: section
font.bold: true
font.pixelSize: 20
}
}
}
}




But when I try to use some model from the code (in my case it is a QVariant from PyQt5) it does not work at all:

ListView {
width: 100
height: 100
id: listview
property var m: [
{
name: "Animal",
size: "Big"
},
{
name: "Dog",
size: "Small"
},
{
name: "Cat",
size: "Small"
}
]
model: m

delegate: Text { text: modelData.name; font.pixelSize: 18 }

section.property: "modelData.size"
section.criteria: ViewSection.FullString
section.delegate: Component {
id: sectionHeading
Rectangle {
width: container.width
height: childrenRect.height
color: "lightsteelblue"

Text {
text: section
font.bold: true
font.pixelSize: 20
}
}
}
}


The reason I choose var here because there is not any other method to receive a model from Python , so any list or map from python needs to be wrapped as QVariant.

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