Problem with Pythontex

I would like to use Pythontex. I am on Mac texlive2019, python 3.7 (anaconda) TeXShop V 4.31
I followed all that was written on the documentation for the installation but impossible to have the result ?

documentclass[12pt,french]{article}

usepackage[utf8]{inputenc}
usepackage[T1]{fontenc} 
usepackage{lmodern}
usepackage{babel}
usepackage{pythontex}
setlength{parindent}{0pt}

begin{document}

begin{pyverbatim}
import math
def racine(a):
    return math.sqrt(a)
print(racine(9))
end{pyverbatim}
bigskip
Résultat : 
begin{pycode}
import math
def racine(a):
    return math.sqrt(a)
print(racine(9))
end{pycode}
begin{pyconsole}
var = 1 + 1
var
end{pyconsole}
end{document}