Customer Service Center

• In order to execute a python script from the command sequencer it will be necesary to either use:
  • The "Global Services: Run Custom Command" sequencer command and a TCL script that executes the Python script from it.
  • Or the "Run External Process Command"
• In both cases the Python script is not capable of executing any Spirent TestCenter API specific commands that belong to the GUI session it is being executed from. It would be a standalone script.

• STC
• Command sequencer
  • "Global Services: Run Custom Command" sequencer command
  • 
• Python and TCL already installed and configured in the environment variable PATH

• In the command sequencer add the "Global Services: Run Custom Command" command and set the filepath of the TCL script.
• In the TCL script use the "exec" function to call the Python script, refer to the example below:
  • This example will create a text file from the TCL script and another file from a Python script called from the TCL script
  • The file that should be set in the "Global Services: Run Custom Command" command must be the TCL script
  • TCL script "tcl_script.tcl"

puts "exec python"

exec python "C:/the/full/filepath/python_script.py"

puts "create tcl file"
set fp [open "C:/the/full/filepath/file_tcl.txt" w+]
puts $fp "Test from tcl"
close $fp

puts "tcl script finished"

return 1

• Python script "python_script.py"

f = open("C:/the/full/filepath/file_python.txt", "w")
f.write("Test from python")
f.close()

• Another option is to use the "Run External Process Command"
  • 
  • This basically runs a command from your Windows Command prompt.
    It could be like a simple c:\dir command or it could be a script. 
    Whatever is done on this external process is outside of TestCenter config itself.
    In this case you "can" run a python script but as mentioned, it is external to TestCenter.

• The Python interpreter used is 2.7.14
  • You must configure the “Tcl/Tk Installation Path” in the GUI (going to Tools-->Options->Tcl/Tk ), you should select the path up to the “TCL” directory:
  • i.e.
    • C:\Program Files\Spirent Communications\Spirent TestCenter 4.90\TCL