> import "PythonVariable"
> import "Simantics/DB"
> import "String"
> 
> py = openPythonContext
> runWithPythonContext py do
>     setPythonIntegerVariable "foo" 4
>     setPythonDoubleArrayVariable "bar" (vector [1.0, 2.0, 3.0])
> 
> var = getPythonContextVariable py
> sort $ map nameOf $ properties var
["__builtins__", "__doc__", "__loader__", "__name__", "__package__", "__spec__", "bar", "foo"]
> foo = property var "foo"
> bar = property var "bar" 
> datatype foo
Long
> datatype bar
Variant[]
> value bar :: Variant
[1.0 : Double, 2.0 : Double, 3.0 : Double] : Variant[]
> value bar :: [Double]
[1.0, 2.0, 3.0]
> possibleChild var "foo"
Nothing
> possibleProperty var "dummy"
Nothing 
> runWithPythonContext py do
>     executePythonStatement "baz = (1.0, 'string_value', [2.0, 3.0])"
> sort $ map nameOf $ properties var
["__builtins__", "__doc__", "__loader__", "__name__", "__package__", "__spec__", "bar", "baz", "foo"]
> v = propertyValue var "baz" :: Variant
> v
[1.0 : Double, "string_value" : String, [2.0 : Double, 3.0 : Double] : Variant[]] : Variant[]
> variantElement v 1 :: String
"string_value"