topic array.removeAll() in Python Questions

array.removeAll()

MichaelFedak — Sun, 12 Dec 2021 16:15:42 GMT

I have an Array object I would like to clear using array.removeAll() however I keep getting the error:

<type 'exceptions.TypeError'>: unbound method removeAll() must be called with Array instance as first argument (got nothing instead)

Re: array.removeAll()

JasonScheirer — Wed, 02 Mar 2011 17:35:29 GMT

Could you paste a larger code snippet for context?

Re: array.removeAll()

MichaelFedak — Sat, 11 Dec 2021 12:41:50 GMT

Sorry, here is the code till the line where it fails. I based it on the fourth example here: http://help.arcgis.com/en/arcgisdesktop/10.0/help/index.html#/DataFrame/00s300000003000000/

import arcpy,os
#Declare Variables
mxd = arcpy.GetParameter(0)
outLocation = arcpy.GetParameterAsText(1)
outName= arcpy.GetParameterAsText(2)+".shp"
outPath = os.path.join(outLocation,outName)
featureList = []
ar=arcpy.Array

#Export the table values to a string
maps=mxd.exportToString()
#Remove field delimiters
maps = maps.replace("'",'').strip()
arcpy.AddMessage(maps)
maplist= maps.split(';')
arcpy.AddMessage(maplist)

#Cycle through list of maps

for mapp in maplist: 
 
 arcpy.AddMessage(mapp)
 mxd1 = arcpy.mapping.MapDocument(mapp)
 
 frames = arcpy.mapping.ListDataFrames(mxd1)
 
 #Cycle through the list
 for df in frames:  
  #Creates a polygon object 
  poly = arcpy.Polygon(ar([df.extent.lowerLeft, df.extent.lowerRight, df.extent.upperRight, df.extent.upperLeft]),
         df.spatialReference)         
  featureList.append(poly)
  
  #Remove the array for the next polygon 
  ar.removeAll(ar)

Re: array.removeAll()

JasonScheirer — Sat, 11 Dec 2021 12:41:52 GMT

You don't need to clear it out each time the way you are, each instance of Array is a stand-alone object:

for df in frames:  
  #Creates a polygon object 
  poly = arcpy.Polygon(arcpy.Array([df.extent.lowerLeft, df.extent.lowerRight, df.extent.upperRight, df.extent.upperLeft]),
         df.spatialReference)         
  featureList.append(poly)
                # All done

Re: array.removeAll()

MichaelFedak — Wed, 02 Mar 2011 21:57:20 GMT

Excellent, thank you.