topic Re: If feature class is empty append in Python Questions

If feature class is empty append

CCWeedcontrol — Sat, 11 Dec 2021 16:06:32 GMT

How do you check if a feature class is empty and if it's empty append features to that feature class, if it's not not empty it would just pass or ignore the append. Would it best to use count or arcpy.da.SearchCursor?

with arcpy.da.SearchCursor(FcLyr, "SHAPE@")as cursor:
    for row in cursor:
        if row[0] is None:
            arcpy.Append_management(FcLyr2, FcLyr)          
        else:
            print 'Has features'‍‍‍‍‍‍‍‍‍‍‍‍

Re: If feature class is empty append

JoeBorgione — Fri, 14 Dec 2018 04:07:00 GMT

Take a look at get count: Get Count—Help | ArcGIS Desktop

Re: If feature class is empty append

CCWeedcontrol — Sat, 11 Dec 2021 16:06:34 GMT

So i tried two different approaches. I am not sure which one is correct but they seem to be working.

Do these seem like reasonable approaches?

1st approach

result =  arcpy.GetCount_management(FcLyr)  
count = int(result.getOutput(0))
print(count)
if count == 0:  
 arcpy.Append_management(FcLyr2, FcLyr)  
 print "Layer empty, appending features " + FcLyr  
else:  
 print "layer has features " + FcLyr  ‍‍‍‍‍‍‍‍

2nd approach

Count = int(arcpy.GetCount_management(FcLyr).getOutput(0))
if Count > 0:
    print("Lyr has features")
    
else:
    arcpy.Append_management(FcLyr2, FcLyr)
    print("Lyr append completed successfully")‍‍‍‍‍‍‍

Re: If feature class is empty append

JoeBorgione — Fri, 14 Dec 2018 17:06:17 GMT

Both seem okay to me: I like short and sweet so the 2nd approach.

Try it on some test data before you deploy it.