Mastery Level

Write a function symmetry$($inpath$,$ outpath$)$ to

read the left half of an ASCII image from the input file

inpath line$-$by$-$line, repair the image, and write the

result to the output file outpath $!$

Do not duplicate the last character on each line $($the

"spine" of the butterfly$).$

Use the basic try$-$except statement to catch a

possible exception:

If success then return True, otherwise display the

error message and return False.

All lines in the file should have the same length, but do

not rely on this.

Test it$,$ and if it's not the case, then display a warning

"WARNING: Lines do not have the same

length." and return False.

Expected output

Do not change the main program. Expected output is shown on the right.

Hint: Study the image carefully. You will find that besides reversing each line, you also need to swap the parentheses

$\text{'}(\text{'}$ and $\text{'})\text{'},$ and the forward and backward slashes. The backward slash is a special character, therefore you need to

use $\text{'}11\text{'}$ for it$.$