Question

我还在弄清楚Python和Maya是如何协同工作的，所以原谅我的无知。所以我试图使用像这样的循环来改变maya中关节列表的属性：

for p in jointList: cmd.getAttr(p, 'radius', .5)

我收到此错误：

Invalid argument 1, '[u'joint1']'. Expected arguments of type ( list, )

我不知道我做错了什么。

Answer 1

除非您使用pyMel，否则您需要指定要获取或设置的attr名称和节点。

for getAttr：

for p in jointList:
    val = cmd.getAttr('%s.radius' % (p))

for setAttr：

for p in jointList:
    cmd.setAttr('%s.radius' % (p), .5)

Answer 2

您需要将节点和频道都指定为第一个参数，例如＆＃39; joint1.radius＆＃39;。

在所有关节上将半径设置为.5，您的代码为：

for p in jointList:
    cmd.setAttr(p + '.radius', .5)

Answer 3

来自文档中的示例：

http://help.autodesk.com/cloudhelp/2017/ENU/Maya-Tech-Docs/CommandsPython/getAttr.html

http://help.autodesk.com/cloudhelp/2017/ENU/Maya-Tech-Docs/CommandsPython/setAttr.html

当您将对象名称和属性传递给getAttr（）函数时，需要将其指定为字符串。

e.g。

translate = cmds.getAttr('pSphere1.translate')

将返回pSphere1

上的translate的属性值

或

jointList = cmds.ls(type='joint')    
for joint in jointList:
        jointRadius = cmds.getAttr('{}.radius'.format(joint))
        #Do something with the jointRadius below

如果你想设置它

newJointRadius = 20

jointList = cmds.ls(type='joint') 
for joint in jointList:
    cmds.setAttr('{}.radius'.format(joint), newJointRadius)

Answer 4

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maya python中列表的setAttr

4 个答案: