Q$1$: What will be the output of the code below? Explain your answer.

def extendList$($val$,$ list$=[])$:

list.append$($val$)$

return list

list$1=$ extendList$(10)$

list$2=$ extendList$(123,[])$

list$3=$ extendList$(\text{'}$a$\text{'})$

print $("$list$1=\%$s$"\%$ list$1)$

print $("$list$2=\%$s$"\%$ list$2)$

print $("$list$3=\%$s$"\%$ list$3)$