Continue and break statement doing the same thing

Question

This is my 2nd noob question for today... so bear with me. So this is supposed to loop through 'nothing' and 'persp' while still renaming/printing After:[u’concrete_file1’] because of the continue; statement, but I just get empty brackets. I ran the same function without this:

        if not (maya.cmds.ls(texture) and
        maya.cmds.nodeType(texture)=='file'):
            continue;

And without 'nothing' and 'persp' and it worked fine so I'm assuming the problem is in there somewhere, but after fiddling with it for a while I still don't know what it is... This'll probably be some super simplistic answer but I'm on day 2 of learning this stuff so ¯\_(ツ)_/¯

def process_all_textures(**kwargs):
    pre = kwargs.setdefault('prefix');
    if (isinstance(pre, str) or
    isinstance(pre, unicode)):
        if not pre[-1] == '_':
            pre += '_';
    else: pre = '';
    textures = kwargs.setdefault('texture_nodes');
    new_texture_names = [];
    if (isinstance(textures, list) or
    isinstance(textures, tuple)):
        for texture in textures:
            if not (maya.cmds.ls(texture) and
            maya.cmds.nodeType(texture)=='file'):
                continue;
                new_texture_names.append(
                maya.cmds.rename(
                texture,
                '%s%s'%(pre, texture)
                )
                );
        return new_texture_names;
    else:
        maya.cmds.error('No texture nodes specified');

#Should skip over the 2 invalid objects ('nothing' & 'persp')
#because of the continue statement...

new_textures= [
'nothing',
'persp',
maya.cmds.shadingNode('file', asTexture=True)
];
print ('Before: %s'%new_textures);
new_textures = process_all_textures(
texture_nodes = new_textures,
prefix = 'concrete_'
);
print ('After: %s'%new_textures);

Before: ['nothing', 'persp', u'file1']
After: []

Also I'm just using the Maya Script Editor to write all this, is there a better editor that might be easier?

Answer 1

Include an else to make the statements after continue; run when if not (maya.cmds.ls(texture) and maya.cmds.nodeType(texture)=='file'): is not true.

What happens here, is that there is only that one condition. Whenever that is true, it evaluates continue; and skips the rest of the statements. However, whenever that is not true, it also skips new_texture_names.append(maya.cmds.rename(texture, '%s%s'%(pre, texture))); because that is inside the if condition.