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MISSION 1 OF 3
Clean an imported filename
Python track: BeginnerMission: BeginnerWhitespace trimmingString methodsImmutability
Before you start this beginner track
Variables, strings, and basic lists. Build up to dictionary counting.
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KNOWLEDGE CHECK
Predict the result.
What filename is printed, with no surrounding whitespace?
mission.py
raw_name = " guide.MD \n"trimmed_name = raw_name.strip()filename = trimmed_name.lower()print(filename)Run each standalone script with Python 3.8+. File names and log entries are in-memory sample text; no files, packages, or input are required.
Review the lesson
Imported text can contain unwanted whitespace around a useful value. strip returns a string with whitespace removed from both ends, while leaving spaces inside the name alone. lower returns a lowercase version. Strings are immutable, so each result is assigned to a variable before the cleaned filename is printed.
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