<aside> ℹ️ - Assignment 2 is due Week 11 Monday 10:00:00 AM 2025 - Do my experience 😊

• Lab time will be a sample exam but there is still a lab to complete in your own time

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🐍 Python

• Write a Python program, until.py, which takes as an argument either a line number (e.g. 3) or a regular expression (e.g. /.[13579]/) and prints all lines given to it by standard input until the given line number, or the first line matching the regular expression.
• Write a Python program, change_case.py, that maps all lower-case vowels a,e,i,o,u in its standard input into their upper-case equivalents and, at the same time, maps all upper-case vowels A, E, I, O, U into their lower-case equivalents. The following shows an example input/output pair for this program.
• These commands both copy a directory tree to a CSE server.

👨‍🎓 Revision

• Write a shell script called check.sh that looks for duplicated student ids in a file of marks for a particular subject.
• Write a Python script revline.py that reverses the fields on each line of its standard input.
• Which one of the following regular expressions would match a non-empty string consisting only of the letters x, y and z, in any order?
• Write a Python program heaviest.py which takes 1 or more positive integers as arguments and prints the heaviest.