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…
Results for “strings”
Showing 1–10 of 65
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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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Example
Creating and Joining Strings
…create text and join it in Python. Basics of working with strings.
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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
JSON-looking payload
…quotes and an apostrophe exactly, then build it with an f-string that needs literal curly braces.
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Challenge
Debris grid
Scan a radar grid stored as a list of strings with a loop inside a loop, print the row and column of every # with enumerate(), then turn the loops around to find the columns that are clear all the way…
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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…
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Challenge
Alert banner
…an alert between two 30-character borders from a single f-string with \n, then add more lines and centre the title in the border.
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Challenge
Units and separators
…a fuel fraction as a percentage, using format specs in f-strings.
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Challenge
Path in a config
…it turn into a new line and a tab. Fix it with a raw string, then handle a path that ends with a backslash.