topic Re: TypeError: 'FeatureLayer' object is not iterable in Python Questions

TypeError: 'FeatureLayer' object is not iterable

StuartMoore — Wed, 01 Sep 2021 09:14:54 GMT

i am trying to iterate the features from a feature service within ArcGIS Pro Notebook

this is my code and it seems to connect to the feature service and returns the name correctly

items = gis.content.search('title:LiveData owner:xxxxxx', 'feature layer') OP1item = items[0] PLS = OP1item.layers[11] print(PLS.properties["name"])

xxSection

but when i try and iterate it

for x in PLS: print(x)

i get this error:

--------------------------------------------------------------------------- TypeError Traceback (most recent call last) In [35]: Line 3: for x in PLS: TypeError: 'FeatureLayer' object is not iterable ---------------------------------------------------------------------------

any ideas what i'm doing wrong?

Re: TypeError: 'FeatureLayer' object is not iterable

JohannesLindner — Wed, 01 Sep 2021 09:26:42 GMT

You can't iterate FeatureLayers. Create a SearchCursor and iterate that:

fields = [f.name for f in arcpy.ListFields(PLS)] # or define a subset of fields print(fields) with arcpy.da.SearchCursor(PLS, fields) as cursor: for row in cursor: print(row)

Re: TypeError: 'FeatureLayer' object is not iterable

StuartMoore — Wed, 01 Sep 2021 09:37:37 GMT

thanks @JohannesLindner i tried that but got a different error:

--------------------------------------------------------------------------- OSError Traceback (most recent call last) In [39]: Line 3: fields = [f.name for f in arcpy.ListFields(PLS)] # or define a subset of fields File C:\Program Files\ArcGIS\Pro\Resources\ArcPy\arcpy\__init__.py, in ListFields: Line 1134: return gp.listFields(dataset, wild_card, field_type) File C:\Program Files\ArcGIS\Pro\Resources\ArcPy\arcpy\geoprocessing\_base.py, in listFields: Line 353: self._gp.ListFields(*gp_fixargs(args, True))) OSError: "<FeatureLayer url:"https://xxx.xxx.xxx.net/arcgis/rest/services/Collector/LiveData/FeatureServer/11">" does not exist ---------------------------------------------------------------------------

i also tried it with all fields and got another error:

with arcpy.da.SearchCursor(PLS, "*") as cursor: for row in cursor: print(row) --------------------------------------------------------------------------- RuntimeError Traceback (most recent call last) In [40]: Line 5: with arcpy.da.SearchCursor(PLS, "*") as cursor: RuntimeError: 'in_table' is not a table or a featureclass ---------------------------------------------------------------------------

its got me stumped as i've iterated over feature layers in an AGOL Notebook in a similar way and it worked

Re: TypeError: 'FeatureLayer' object is not iterable

DanPatterson — Wed, 01 Sep 2021 10:10:16 GMT

Example

gdb = r"C:\arcpro_npg\npg\Project_npg\tests.gdb" arcpy.env.workspace = gdb fcs = arcpy.ListFeatureClasses() nmes = [i for i in fcs] # take the first 3 fcs as an example for i in fcs[:3]: fc = "\\".join([gdb, i]) fnames = arcpy.ListFields(fc) flds.append([j.name for j in fnames]) nmes[:3] ['big', 'odd', 'odd_inters'] flds ['OBJECTID', 'Shape', 'Shape_Length', ... snip 'PART_COUNT_1', 'PNT_COUNT_1', ['OBJECTID', 'Shape', 'Shape_Length', 'Shape_Area'], ['OBJECTID', 'Shape', 'ORIG_FID', .... snip 'INSIDE_Y_1', 'PART_COUNT_1', 'PNT_COUNT_1']]

Re: TypeError: 'FeatureLayer' object is not iterable

StuartMoore — Wed, 01 Sep 2021 10:49:36 GMT

thanks @DanPatterson & @JohannesLindner

i've managed to get it working

from arcgis.gis import GIS gis = GIS("home") xxM = gis.content.get("54e2xxxeae") xxLive = xxM.layers[11]

NewxxLive = xxLive.query(where = "OBJECTID = 11")

print("--Start Run--") for feature in NewxxLive: print("---Start--") print(feature) print("----")

--Start Run-- ---Start-- {"geometry": {"paths": [[[51....]]]}, "attributes": {"OBJECTID": 11 }} ----