What is exception? What is difference between Syntax Error and Exceptions?

Give an example of division by zero exception using try catch statement. See the

codes block $($i$)$ and $($ii$)$ and compare the output :

$($i$)$ try:

a $=[1,2,3]$

print $($a$[3])$

except LookupError:

print $("$Index out of bound error."$)$

else:

print $("$Success$")$

$($ii$)$

a $=[1,2,3]$

try: print $("$Second element $=\%$d$"\%($a$[1]))$

print $("$Fourth element $=\%$d$"\%($a$[3]))$

except:

print $("$An error occurred"$)$