ArcPy Field Name List
Frequently, especially when using cursors, I need to quickly get a list of field names not including the ObjectID nor Geometry fields. I accomplish this by using a quick shorthand function.
fields_list = lambda feature_class: [field.name for field in arcpy.ListFields(feature_class) if field.type != 'Geometry' and field.type != 'OID']
True, it is not very Pythonic. There are a few things happening in there and the conditional statement likely could be condensed. It works for what I need, though.
Here is the breakdown of what is going on. It is mostly a list comprehension, a shorthand for building Python Lists. This list comprehension is wrapped into a lambda function, another shorthand, this one for creating functions on the fly. If exploding this out into a longer form, it looks like this.
def fields_list(feature_class): # variable to store list fields =  # for every field in the feature class for field in arcpy.ListFields(feature_class): # if the field is not geometry nor oid if field.type != 'Geometry' and field.type != 'OID': # append the field name to the list fields.append(field.name) # return the list of field names return fields
While easier to read, the former is easier to cut and paste. This is why I use it more frequently. Hopefully this makes your life easier when data munging, something I frequently find myself doing.