python - 名称“...”未定义

Question

我收到一条消息说

Traceback (most recent call last):
File "<input>", line 1, in <module>
NameError: name 'update' is not defined

原始代码是

    from PySide import QtCore

    i = 0
    def update();
    global i
App.getDocument("Unnamed2").Pad001.Placement=App.Placement(App.Vector(0,127.5,0), App.Rotation(App.Vector(0,0,1),-i), App.Vector(0,0,0))
App.getDocument("Unnamed2").Pad.Placement=App.Placement(App.Vector(0,0,0), App.Rotation(App.Vector(0,0,1),i*(74.0/28.0)), App.Vector(0,0,0))
i += 0.01

    timer = QtCore.QTimer()
    timer.timeout.connect( update )
    timer.start( 1 )

这是齿轮动画的代码，但它不起作用。我在编码方面不是那么好，所以我不确定是什么问题。如果有人可以帮助我，那就太好了。谢谢你。:)

Answer 1

首先，您应该使用def update():而不是def update();. 其次，你缺少缩进

from PySide import QtCore

i = 0
def update():
    global i
    App.getDocument("Unnamed2").Pad001.Placement=App.Placement(App.Vector(0,127.5,0), App.Rotation(App.Vector(0,0,1),-i), App.Vector(0,0,0))
    App.getDocument("Unnamed2").Pad.Placement=App.Placement(App.Vector(0,0,0), App.Rotation(App.Vector(0,0,1),i*(74.0/28.0)), App.Vector(0,0,0))
    i += 0.01

timer = QtCore.QTimer()
timer.timeout.connect( update )
timer.start( 1 )