Describe Field Name?

[Davec43]

Currently the workflow is to split two different Feature Layer by an attribute which produces a lot of separate layers. Then use arcpy.Describe to apply symbology to the based on the layer type (point/Line).

act_map = aprx.activeMap
map = aprx.listMaps("Map1")
layers = act_map.listLayers()
for lyr in layers:
    if(arcpy.Describe(lyr).dataType)=='FeatureLayer':
        if arcpy.Describe(lyr).shapeType=='Point':
            symbology = lyr.symbology
            symbology.updateRenderer("SimpleRenderer")
            symbol = symbology.renderer.symbol
            symbol.color = {"RGB": [169, 0, 230, 100]}
            symbol.outlineColor = {"RGB": [0, 0, 0, 100]}               
            symbol.size = 6
            symbol.outlineWidth = 1
            lyr.symbology = symbology  # "re-set" property symboloy

This works but now we're adding another Feature Layer (Point) that will require separate Symbology. I have the idea to use "Fieldnames" to differentiate the two but can't figure it out.

[Davec43 · Accepted solution]

I went to arcpy.ListFields(lyr) and was able to easier differentiate between the different point layers.

act_map = aprx.activeMap
map = aprx.listMaps("Map1")
OPField = "xxxx"
for lyr in layers:
    fieldList = arcpy.ListFields(lyr)
    for field in fieldList:
        if field.name == OPField:
            symbology = lyr.symbology
            symbology.updateRenderer("SimpleRenderer")
            symbol = symbology.renderer.symbol
            symbol.color = {"RGB": [169, 0, 230, 100]}
            symbol.outlineColor = {"RGB": [0, 0, 0, 100]}               
            symbol.size = 6
            lyr.symbology = symbology

[JoshuaBixby]

As I commented to your question over at GIS SE:  arcpy - Describe Field Name? - Geographic Information Systems Stack Exchange.

According to Field - ArcGIS Pro | Documentation, "Field properties can be accessed through the ListFields and Describe functions." If you already have a Describe object for a layer, e.g., desc = arcpy.Describe(layer), retrieving the fields property will return a list of Field objects: desc.fields.