Just think of it like a directory structure. If you import *, you are putting everything in your "current directory". If you import with a namespace, everything is under a "new directory". The only thing that changes is that leading namespace. Prefer the later and "keep your directory clean" with a namespaced import.
Justin On Tue, 24 Mar 2015 7:31 AM Marcus Ottosson <konstrukt...@gmail.com> wrote: > Though Brian is right, it doesn’t quite explain why you are getting the > behaviour you’re seeing. > > It’s a very good question, and I can completely understand why you would > expect to prefix each PyMEL related call with pm as that is what you > imported it as. The reason you don’t is a tad complicated, but has to do > with two things. > > - Scope > - Object Oriented Programming > > Scope has to do with what variable names you can call without referencing > anything else. > > >>> my_variable = 5>>> print my_variable5 > >>> import os>>> print os > <module 'os' from 'C:\Python27\lib\os.py'> > > The object-oriented part on the other hand is responsible for allowing you > to call upon *members* of a variable; which in this case would instead be > called an *object*. > > >>> my_variable = "hello" > .>> print my_variable.upper() > HELLO > > And that has to do with the dot following a variable. The dot is > essentially saying “run the following command within the scope of the > previous variable”. In this case, the variable is a string-object, and the > string is an instance of a class with a method called upper() inside of > it. > > # Looks something like this.class String: > def upper(self): > ... > > If you were to make your own class, you could do the same. > > class MyClass(object): > def __init__(self, value): > self.value = value > > def plus_one(self): > return self.value + 1 > > myobject = MyClass(5)print myobject.plus_one()# Which would print 6 > > Objects returned by PyMEL works just like this, which is why you can call > upon methods of those objects, without prefixing them with pm. > > Does that help? > > > On 23 March 2015 at 18:14, <br...@meljunky.com> wrote: > >> Methods do no need to reference the module. >> >> pm.ls(type='camera')[0].getParent().getTranslation().z >> >> -brian >> www.meljunky.com >> >> -------- Original Message -------- >> Subject: [Maya-Python] Basic question about pyMel >> From: Simon Davies <simonj.dav...@hotmail.co.uk> >> Date: Mon, March 23, 2015 12:59 pm >> To: python_inside_maya@googlegroups.com >> >> Hi all, >> >> I understand that if I import pyMel into Maya like this: >> >> from pymel.core import * >> >> I can then build up pyMel functions like this: >> >> ls(type='camera')[0].getParent().getTranslation().z >> >> >> However if I import pyMel with a name space instead: >> >> import pymel.core as pm >> >> Would the pyMel methods above all need prefixing with pm like this? >> >> pm.ls(type='camera')[0].pm.getParent().pm.getTranslation().z >> >> >> The above code doesn't work, so how should it be written if I import >> pymel as pm? >> >> Thanks a lot. >> >> -- >> You received this message because you are subscribed to the Google Groups >> "Python Programming for Autodesk Maya" group. >> To unsubscribe from this group and stop receiving emails from it, send an >> email to python_inside_maya+unsubscr...@googlegroups.com. >> To view this discussion on the web visit >> https://groups.google.com/d/msgid/python_inside_maya/33fcd70f-b4c2-496f-b05d-a41196a428ca%40googlegroups.com >> <https://groups.google.com/d/msgid/python_inside_maya/33fcd70f-b4c2-496f-b05d-a41196a428ca%40googlegroups.com?utm_medium=email&utm_source=footer> >> . >> For more options, visit https://groups.google.com/d/optout. >> >> -- >> You received this message because you are subscribed to the Google Groups >> "Python Programming for Autodesk Maya" group. >> To unsubscribe from this group and stop receiving emails from it, send an >> email to python_inside_maya+unsubscr...@googlegroups.com. >> To view this discussion on the web visit >> https://groups.google.com/d/msgid/python_inside_maya/20150323111411.4b67a6573d13e8dd18091ea81788b1e6.4b8c60eefb.wbe%40email06.secureserver.net >> <https://groups.google.com/d/msgid/python_inside_maya/20150323111411.4b67a6573d13e8dd18091ea81788b1e6.4b8c60eefb.wbe%40email06.secureserver.net?utm_medium=email&utm_source=footer> >> . >> >> For more options, visit https://groups.google.com/d/optout. >> > > > > -- > *Marcus Ottosson* > konstrukt...@gmail.com > > -- > You received this message because you are subscribed to the Google Groups > "Python Programming for Autodesk Maya" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to python_inside_maya+unsubscr...@googlegroups.com. > To view this discussion on the web visit > https://groups.google.com/d/msgid/python_inside_maya/CAFRtmOBtFFtW132_K_RQhYSe69rA%2BfkRhVgUbV_crq0Fho2Jug%40mail.gmail.com > <https://groups.google.com/d/msgid/python_inside_maya/CAFRtmOBtFFtW132_K_RQhYSe69rA%2BfkRhVgUbV_crq0Fho2Jug%40mail.gmail.com?utm_medium=email&utm_source=footer> > . > For more options, visit https://groups.google.com/d/optout. > -- You received this message because you are subscribed to the Google Groups "Python Programming for Autodesk Maya" group. 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