new_contents: import arcpy
  
  arcpy.env.workspace = ws = r"PATH"
  
  count = 0
  
  for f in arcpy.ListFiles('*.shp'):
  	print f
  	
  	#deleting fields
  	arcpy.DeleteField_management(f, ["AREA","PERIMETER"])
  	
  	#adding fields
  	arcpy.AddField_management(f, "CT_NAME", "TEXT", "", "", 7)
  	arcpy.AddField_management(f, "CTUID", "TEXT", "", "", 11)
  	
  	count = count + 1
  
  print count
  
  # refer to arc documentation for more info
  
subject: Create batch_add_and_delete_fields.py