vtkDataArray* temparr = input->GetPointData()->GetScalars(); int datasize = 512*512*50; double* testshortarr = new double[datasize]; for(int i=0; i<datasize; i++){ testshortarr[i] = temparr->GetComponent(i,0); } vtkDoubleArray* tempimarr2 = vtkDoubleArray::New(); tempimarr2->SetVoidArray(testshortarr,datasize,1); // temparr->GetData(0,datasize-1,0,0,tempimarr2); vtkImageData* testimdata = vtkImageData::New(); testimdata->SetDimensions(512,512,50); testimdata->SetSpacing(spacing); testimdata->GetPointData()->SetScalars(tempimarr2); testimdata->Modified();翻译为python语言

以下是将上述代码翻译为Python语言的结果：

import vtk

input = vtk.vtkImageData()
temparr = input.GetPointData().GetScalars()
datasize = 512*512*50
testshortarr = vtk.vtkDoubleArray()
testshortarr.SetNumberOfComponents(1)
testshortarr.SetNumberOfTuples(datasize)
for i in range(datasize):
    testshortarr.SetValue(i, temparr.GetComponent(i, 0))

tempimarr2 = vtk.vtkDoubleArray()
tempimarr2.SetVoidArray(testshortarr, datasize, 1)
testimdata = vtk.vtkImageData()
testimdata.SetDimensions(512, 512, 50)
testimdata.SetSpacing(spacing)
testimdata.GetPointData().SetScalars(tempimarr2)
testimdata.Modified()

需要注意的是，Python语言中没有C++语言中的指针，因此将`vtkDoubleArray`对象的指针作为参数传递的方式需要做出相应的调整。在Python中，可以使用`SetValue()`方法来设置数组元素的值，并使用`SetNumberOfComponents()`和`SetNumberOfTuples()`方法来设置数组的维度。