CCIT$4020$ Introduction to Computer Programming $-$ Assignment $3$

SECTION B: Code Tracing $[10$ marks$]$

$-$ Write down the output if there are no syntax or runtime errors in the code segment, and put $\text{'}$NA$\text{'}$ in the 'Reason' column.

$-$ Write down the output together with the error type when a logic error is found. Describe the reason in the 'Reason' column.

$-$ Choose the error type from one of the following: $[$SyntaxError; RuntimeError; LogicError$]$ when an error is found. Describe the reason in the "Reason" column.

Each question carries $\backslash (\backslash$mathbf$\{2\}\backslash )$ marks.

$\backslash$begin$\{$tabular$\}\{|$c$|$c$|$c$|$c$|\}$

$\backslash$hline & Code Segment & Output$/$Error Type & Reason $\backslash \backslash$

$\backslash$hline B$-1$ & $```$

numbers $=[1,2,3,4,5,6]$

squared $=\{$x:x$**2$ for x in numbers if x$82!=0\}$

aList $=[]$

for x in squared.keys$()$:

aList. append $($squared $[$x$])$

print$($set$($aList$)-$ set$($numbers$))$

$```$ & & $\backslash \backslash$

$\backslash$hline B$-2$ & $```$

def calculate$\_$ops$($set$1,$ set$2,$ set$3)$:

return $($set$1|$set$2)-($set$1.$intersection$($set$3))$

u $=\{10,6,3)$

v $=\{3,4,15\}$

w $=\{2,5,7\}$

print$($calculate$\_$ops$($u$,$ v$,$ w$))$

$```$ & & $\backslash \backslash$

$\backslash$hline B$-3$ & $```$

file$1=$ open$(\text{'}$greeting$.$txt$\text{'},\text{'}$w$\text{'})$

file$1.$write$("$Hello$,$ World!"$)$

file$1.$close$()$

file$2=$ open$(\text{'}$greeting$.$txt$\text{'},\text{'}$r$\text{'})$

content $=$ file$1.$read$()$

file$2.$close$()$

print$($content$)$

$```$ & & $\backslash \backslash$

$\backslash$hline

$\backslash$end$\{$tabular$\}$

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