setlocal enabledelayedexpansion
set counter=0
set result=0
for /r C:\Users\Arthur\Desktop\teste %%f in (*.*) do (
    for /f "delims=" %%a in ('python sheska.py -c "naive_bayes" -f %%f --html') do @set myresult=%%a
    IF !myresult! EQU 1 SET /A counter=!counter!+1
)
echo !counter!
endlocal