Edit - Geographic Information Systems Stack Exchange

You are not logged in. Your edit will be placed in a queue until it is peer reviewed.

We welcome edits that make the post easier to understand and more valuable for readers. Because community members review edits, please try to make the post substantially better than how you found it, for example, by fixing grammar or adding additional resources and hyperlinks.

I disagree. Even if you only have a group in your layers panel, the script provided in the question body should return a number other than zero. That's the problem exposed by the question: length of root's children should not be zero for non-empty QGIS projects. See my answer.
– Germán Carrillo
Commented Jul 4, 2017 at 0:52
I can confirm. Curiously, this approach does find layer groups without a proper call to setPrefixPath() but I don't get any layers returned. It works fine with setPrefixPath() in place, however; appreciate the suggestion.
– Todd West
Commented Jul 4, 2017 at 5:16

Add a comment |

Correct minor typos or mistakes
Clarify meaning without changing it
Add related resources or links
Always respect the author’s intent
Don’t use edits to reply to the author

create code fences with backticks ` or tildes ~
```
like so
```
add language identifier to highlight code
```python
def function(foo):
print(foo)
```
put returns between paragraphs
for linebreak add 2 spaces at end
_italic_ or **bold**
indent code by 4 spaces
backtick escapes `like _so_`
quote by placing > at start of line
to make links (use https whenever possible)
<https://example.com>
[example](https://example.com)
<a href="https://example.com">example</a>

formatting help »
answering help »