Add multiple fields in attribute table

Question

How do I add in multiple fields in the attribute table? In the attribute table I have crop types such as corn, cotton, sorghum....etc (as shown image below), in square meters. I want to generate new fields so I can calculate into acres. I am using python that would have add fields, but I would still have to provide field names, one by one (and there are a lot of field names to enter). Can I just have GIS to generate fields that are based on the existing fields without me listing them?

Image of table is attached.

Answer 1

You'll have to loop through your current fields with ListFields. Then in your AddField_management() call just add '_acres' or something that identifies it as different from your current field name.

Something along these lines:

for field in arcpy.ListFields(featureClass):
    arcpy.AddField_management(featureClass, field.name + '_acres', 'FLOAT')

If you don't want to add a new field for every field in your feature class, you'll have to add some simple conditional statements:

for field in arcpy.ListFields(featureClass):
    if field.name == 'badField': # Name of field you don't want to add acreage for
        print "Not going to add this field"
    else:
        arcpy.AddField_management(featureClass, field.name + '_acres', 'FLOAT')