Summary
Returns a list of available printers on the local computer.
Syntax
ListPrinterNames ()
| Data Type | Explanation | 
| String | Returns a list containing the printer names available to the script. | 
Code sample
Returns a list of printer names available to session.
import arcpy
# Print available printers
printers = arcpy.ListPrinterNames()
for printer in printers:
    print(printer)