IPythonList.ToArray

Syntax

ToArray: Array;

Description

The ToArray method transforms list contents into a Fore array.

Comments

The obtained array will have the Variant data type. If a list was multi-level one, the obtained array will also be multidimensional.

Example

Executing the example requires a folder with Python modules: D:\Work\Python\. The folder contains the sample.py module. The following function is implemented in the module:

def getArr2Dim():
    arr2Dim = [[1,2,3],[10,20,30]]
    return arr2Dim

Add a link to the Python system assembly.

Sub UserProc;
Var
    pUtils: IPythonUtils;
    pList: IPythonList;
    Result: Variant;
    Arr: Array;
    i, j: Integer;
Begin
    pUtils := New PythonUtils.Create;
    pUtils.AddFolderToPythonPath("d:\Work\Python\");
    //Get list that is result of function execution
    Result := pUtils.Invoke("sample", "getArr2Dim");
    //Create a list from obtained result of the getArr2Dim function
    pList := New PythonList.Create(Result);
    //As the result of the getNewList function is an object, the created list in pList
    //will consist of one element. This element should also be cast to the IPythonList type to
    //work with single list elements from the getArr2Dim result.
    pList := pList.Item(0) As IPythonList;
    Arr := pList.ToArray;
    Debug.WriteLine("Number of dimensions: " + Arr.Rank.ToString);
    If Arr.Rank = 2 Then
        For i := Arr.GetLowerBound(1) To Arr.GetUpperBound(1) Do
            For j := Arr.GetLowerBound(2) To Arr.GetUpperBound(2) Do
                Debug.Write(Arr[i, j] + ' ');
            End For;
            Debug.WriteLine("");
        End For;
    End If;
End Sub UserProc;

After executing the example the getArr2Dim Python function will be executed. This function returns a flat list. The obtained list will be converted to a flat Fore array. Values of array elements are displayed in the development environment console.