Explain split(), sub(), subn() methods of "re" module in Python.
Interviewer Expectations for this Question
01
Core Competency
Assesses fundamental understanding of Python conventions, runtime behavior, and memory/performance considerations.
02
Evaluation Criteria
Hiring managers look for precision, avoidance of ambiguous jargon, and ability to explain trade-offs under real production conditions.
Comprehensive Model Answer
Verified Solution
To modify the strings, Python's "re" module is providing 3 methods. They are:
split() – uses a regex pattern to "split" a given string into a list.
sub() – finds all substrings where the regex pattern matches and then replace them with a different string
subn() – it is similar to sub() and also return s the new string along with the no. of replacements.
Candidate Response Strategy & Interview Tips
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