Getting list of layer names using PyQGIS

Question

I need a list containing the names of all the layers in a QGIS session. I did the task as

layersNames = []
for i in self.iface.mapCanvas().layers():
   layersNames.append(str(i.name()))

but this has the problem that only the names for the visible layers are extracted. How can I get a list with the names of all (visible or not) layers using PyQGIS?

score 29 · Answer 1 · edited Nov 12 '21 at 06:05

29

Since version 3, QgsMapLayerRegistry funcionalities have been moved to QgsProject: https://qgis.org/api/api_break.html

Update for QGIS3.x:

from qgis.core import QgsProject
names = [layer.name() for layer in QgsProject.instance().mapLayers().values()]
print(names)

as per @Nathan W's answer, this produces a list of layers in the current project:

['GoogleSat', 'MyPointsLayer', 'Roads', 'House_numbers']

edited Nov 12 '21 at 06:05

Taras

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answered Oct 30 '19 at 19:58

RafDouglas C. Tommasi

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1

How does it work in the new version to get back just active layers? – James Norris Sep 08 '20 at 14:23

score 19 · Accepted Answer · edited Nov 12 '21 at 06:04

19

QgsMapLayerRegistry.instance().mapLayers() will give you all layers that are opened.

If you want the names then:

names = [layer.name() for layer in QgsMapLayerRegistry.instance().mapLayers().values()]

names will be a list of layer names

or using a normal function:

for layer in QgsMapLayerRegistry.instance().mapLayers().values():
    print layer.name()

edited Nov 12 '21 at 06:04

Taras

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answered Oct 19 '14 at 09:09

Nathan W

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Is there any way of listing down the layers from qgis project (.qgz) by mentioning the filename ? in other words, I want to loop over list of files and list down all the layers ? – Kavyajeet Bora Oct 31 '22 at 10:20

Getting list of layer names using PyQGIS

2 Answers2

Update for QGIS3.x:

Linked

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