Answer
$[ ' welc', 'me']$
Work Step by Step
We find that the proper steps are:
s1="Welcome"
$s1.split('o')=$ $[ ' welc', 'me']$
You can help us out by revising, improving and updating this answer.
Update this answerAfter you claim an answer you’ll have 24 hours to send in a draft. An editor will review the submission and either publish your submission or provide feedback.