@echo off
cls
set PATH=%PATH%;
:my_loop
if "%~1"=="" goto completed
echo %1
python "C:\Program Files\Python 3.5\Tools\scripts\2to3.py" -w %1
SHIFT
goto my_loop
:completed
rem PAUSE
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python -c "import sys; print(sys.executable);"
C:\Users\Yu2n\AppData\Local\Programs\Python\Python35-32\python.exe
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::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::
:: Python2to3.bat
::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::
@echo off & cls

:::::::::::::::::::::::::::
:: Check if the system has python installed
:::::::::::::::::::::::::::
set "pyver="
for /f "tokens=1,* delims= " %%a in ('python --version') do (set "pyver=%%~b")
if not defined pyver (
  echo Please install python 3 version ^!
  goto completed
)

:::::::::::::::::::::::::::
:: Check the python version of the system installation
:::::::::::::::::::::::::::
echo python version^: %pyver%
set "pyver=%pyver:.=%"
set /a "pyver=%pyver:~0,2%"
if %pyver% lss 30 (
  echo Please use python 3 version ^!
  goto completed
)

:::::::::::::::::::::::::::
:: Get the python installation path
:::::::::::::::::::::::::::
for /f "delims=" %%a in ('python -c "import sys; print(sys.executable);"') do (set "pydir=%%~dpa")
echo python directory^: %pydir%

:::::::::::::::::::::::::::
:my_loop                 :: Change the python version 2.x to 3.x
:::::::::::::::::::::::::::
  if "%~1"=="" (
    echo ========================================================================
    echo Done!
    goto completed
  )
  call :bak "%~1"
  echo python 2to3.py -w %1
  echo ========================================================================
  python "%pydir%\Tools\scripts\2to3.py" -w %1
  shift
  goto my_loop

:::::::::::::::::::::::::::
:bak                     :: backup file
:::::::::::::::::::::::::::
  if not defined n set /a n=0
  set /a n+=1
  if exist "%~dp1%~n1 (%n%)%~x1.bak" (
    goto :bak
  ) else (
    echo backup^: "%~1" "%~dp1%~n1 (%n%)%~x1.bak"
    copy "%~1" "%~dp1%~n1 (%n%)%~x1.bak"
    goto :eof
  )

:::::::::::::::::::::::::::
:completed
:::::::::::::::::::::::::::
  PAUSE
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python version: 352
python directory: C:\Users\Yu2n\AppData\Local\Programs\Python\Python35-32\
backup: "C:\Users\Yu2n\Desktop\0.py" "C:\Users\Yu2n\Desktop\0 (10).py.bak"
        1 file(s) copied.
python 2to3.py -w C:\Users\Yu2n\Desktop\0.py
========================================================================
RefactoringTool: Skipping optional fixer: buffer
RefactoringTool: Skipping optional fixer: idioms
RefactoringTool: Skipping optional fixer: set_literal
RefactoringTool: Skipping optional fixer: ws_comma
RefactoringTool: No changes to C:\Users\Yu2n\Desktop\0.py
RefactoringTool: Files that need to be modified:
RefactoringTool: C:\Users\Yu2n\Desktop\0.py
========================================================================
Done!
Press any key to continue . . .
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