def blockIndentation(block):
            text = block.text()
            return text[:len(text) - len(text.lstrip())]
def mouse_rotate(xAngle, yAngle, zAngle):
    glRotatef(xAngle, 1.0, 0.0, 0.0);
    glRotatef(yAngle, 0.0, 1.0, 0.0);
    glRotatef(zAngle, 0.0, 0.0, 1.0);