Example
String Methods - upper, lower, strip
Useful methods for working with text: changing case, removing whitespace.
Results for “strip”
Showing 1–10 of 72
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Challenge
Normalise a command
Turn " Launch " into launch with strip() and lower(), check it against the command list, then accept underscores and dashes too, so commands match however operators type them.
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Quiz
Python Strings Quiz
Free beginner quiz on Python strings: 15 questions on joining, indexing, slicing, len(), split(), join() and string methods, with instant answers.
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Challenge
Strings don't change
code[0] = "X" stops with a TypeError, because Python strings can't be changed. Predict the crash, find out what methods and slices really give, build a new string instead, then swap a letter in the…
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Example
Creating and Joining Strings
…create text and join it in Python. Basics of working with strings.
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Challenge
Skip blanks and comments
…101.2 kPa 09:30:10 ENG-2: 415.0 C At the top of the loop, strip the line, then continue when it's empty or starts with # . Stripping first matters: one comment is indented, and a line can hold nothing…
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Example
Text Formatting with f-strings
F-strings are a modern way to format text in Python. Insert variables directly into text.
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Challenge
Sign-up cleanup
Clean the crew sign-ups for the analogue mission: trim and capitalise names, lower-case emails, then reject sign-ups with no name or a broken email and drop duplicates by email, saying why for each…
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Example
String Indexing and Slicing
Accessing individual characters and text fragments. Zero-based indexing in Python.
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Challenge
File name from data
…. Then print it: File: eng-2_2026-03-14.csv Inside an f-string's braces you can call methods too: {sensor_id.lower()} . From a name The configuration form gives sensors names like Star Tracker A , and…