Thanks Roy,
Very interesting to hear. I also tried the createNode function as a
workaround, and it works fine as you pointed out, but I wanted to
understand why using the spaceLocator command with the name param would
give me an error. So it seems like this is a bug. Case closed :)
In the same script I also got an error using the ikHandle command. Seems to
be a similar issue. Without Geordies pound sign trick, the following code
also gives an error.
for x in range(2):
jnt_list = [pm.joint(p=p) for p in [(0,0,0), (5,5,0), (10,0,0)]]
ik_handle, eff = pm.ikHandle(sj=jnt_list[0], ee=jnt_list[-1],
name='test_ik#')
grp = pm.group(em=True)
pm.parent(jnt_list[0], ik_handle, grp)
pm.select(deselect=True)
On Thursday, March 5, 2015 at 10:33:10 PM UTC+1, Roy Nieterau wrote:
>
> I vaguely remember submitting this as a bug and getting a 'Yes, we know'
> from Autodesk.
> Anyway, giving the name right away only messes with the spaceLocator
> command.
> I remember spotting it in one other command, but I can't remember which
> one it was.
>
> Since Maya selects the newly created item you can actually query the
> selection as a workaround! :)
>
> import maya.cmds
>
> def safeSpaceLocator(*args, **kwargs):
> """ Wrapper around spaceLocator command since it doesn't return
> unique names correctly if name argument is provided """
> maya.cmds.spaceLocator(*args, **kwargs)
> return maya.cmds.ls(sl=1)
>
> The same fix works for PyMel of course.
> If you'd rather stay away from querying selections because you might feel
> it's the root of all evil.
> Then here's another workaround, create the node with the createNode
> command.
> print maya.cmds.createNode('locator', name='test')
>
> If you want to have a fixed command without querying selection that still
> allows you to manipulate it with argument like the default spaceLocator
> command, then here's a draft:
> import maya.cmds
>
> def safeSpaceLocator(*args, **kwargs):
>
> createKwargs = {}
> name = kwargs.pop('name', kwargs.pop('n', None))
> if name is not None:
> createKwargs['name'] = name
>
> locator = maya.cmds.createNode('locator', **createKwargs)
>
> if args or kwargs:
> maya.cmds.spaceLocator(locator, e=1, *args, **kwargs)
>
> return [locator]
>
> Note that it doesn't allow to use the last safeSpaceLocator() command in
> edit mode.
> It's trivial to implement if someone wants to monkey patch Maya's command
> plus has the urge to work around querying the selection.
>
> /geek out
> -Roy
>
>
> On Thursday, March 5, 2015 at 9:00:23 PM UTC+1, Eric Thivierge wrote:
>>
>> One thing to maybe mention Chris, is that while list comprehensions take
>> up less lines, the quick readability may diminish. If you have lots of them
>> lined up next to each other or used consecutively it can be very hard to
>> read the code. Especially if it isn't your own.
>>
>> It's a balance of use and readability.
>>
>> Eric T.
>>
>> On 3/5/2015 2:55 PM, Chris Lesage wrote:
>>
>> "One of the reasons that I like to use PyMel is that when you create an
>> object you get a reference to that object and you are not dependent of the
>> name when you want to find the object."
>>
>> Yes, I agree. Well, in this case, you are dependent on the name. Or you
>> cause a bug. :)
>>
>> Also I couldn't resist writing this as list comprehensions. Doing it
>> this way stores your locators as a list of objects that you can reference
>> even after your range(10) is complete.
>>
>> locators = [pm.spaceLocator(n='test#') for x in range(10)]
>> groups = [pm.group(loc, n='group#') for loc in locators]
>>
>> By the way, zfill() is a nice way to give number padding when making a
>> numbered naming convention. This would make test_000, test_001, test_002,
>> etc. ...But this will still cause a nodeError if you don't have unique
>> names:
>>
>> locators = [pm.spaceLocator(n='test_{0}'.format(str(x).zfill(3))) for
>> x in range(10)]
>> groups = [pm.group(loc, n='group#') for loc in locators]
>>
>>
>>
>>
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