answr should be phytonLanguage: Python $3$

$()$ Environment

& Autocomplet

$1>$# $!/$bin$/$python$3$ cdots

#

# Complete the 'calc$\_$prob$\_$a$\text{'}$ function below.

#

def calc$\_$prob$\_$a$($prob$\_$b$\_$given$\_$a$,$ prob$\_$a$\_$given$\_$b$,$ prob$\_$b$)$ :

# Write your code here