Refactor .bat files + default to Python 3

run_scapy

@@ -1,5 +1,4 @@
 #! /bin/sh
 DIR=$(dirname $0)
-PYTHONDONTWRITEBYTECODE=True
-PYTHON=${PYTHON:-python}
+PYTHON=${PYTHON:-python3}
 PYTHONPATH=$DIR exec $PYTHON -m scapy $@

run_scapy.bat

@@ -1,8 +1,8 @@
 @echo off
-call run_scapy_py2.bat --nopause
-if errorlevel 1 (
-   call run_scapy_py3.bat --nopause
-)
-if errorlevel 1 (
-   PAUSE
-)
+set PYTHONPATH=%~dp0
+IF "%PYTHON%" == "" set PYTHON=python3
+WHERE %PYTHON% >nul 2>&1
+IF %ERRORLEVEL% NEQ 0 set PYTHON=python
+%PYTHON% -m scapy %*
+title Scapy - dead
+PAUSE

run_scapy_py2.bat

@@ -1,13 +1,4 @@
 @echo off
 set PYTHONPATH=%~dp0
-set PYTHONDONTWRITEBYTECODE=True
-if "%1"=="--nopause" (
-  set nopause="True"
-  python -m scapy
-) else (
-  set nopause="False"
-  python -m scapy %*
-)
-if %errorlevel%==1 if NOT "%nopause%"=="True" (
-   PAUSE
-)
+set PYTHON=python
+call run_scapy.bat

run_scapy_py3.bat

@@ -1,13 +1,4 @@
 @echo off
 set PYTHONPATH=%~dp0
-set PYTHONDONTWRITEBYTECODE=True
-if "%1"=="--nopause" (
-  set nopause="True"
-  python3 -m scapy
-) else (
-  set nopause="False"
-  python3 -m scapy %*
-)
-if %errorlevel%==1 if NOT "%nopause%"=="True" (
-   PAUSE
-)
+set PYTHON=python3
+call run_scapy.bat