Cross-area library

Content Library

A single library for content items across the complete Content Area hierarchy. Content Areas and Categories define the structure;

2,376 results

2,376 resultsContent Area → Category

Python bin() Function: Usage and Examples

bin(integer) returns a string representation of an integer in base 2 (binary). Its usual output includes the 0b prefix so the base is visible. It does not change the integer itself. See two…

2 views Oct 17, 2026

Python Build a Shopping List Manager

A small shopping-list program can add products, avoid accidental duplicate entries, and display the current list. It combines list methods, conditionals and iteration. See two practical exa…

2 views Oct 17, 2026

Python Build a Student Grade Tracker with Lists

A grade tracker stores numeric scores in a list, computes a total and average, and determines highest and lowest values. Handle an empty class explicitly before dividing. See two practical…

2 views Oct 17, 2026

Python Build a Word and Character Counter

A word counter can split text on whitespace and count resulting tokens. A character counter can measure len(text), but it counts Unicode code points, not necessarily visible glyphs. See two…

3 views Oct 17, 2026

Python Character Classification: Alphabetic, Numeric, or Whitespace?

Python string predicates such as isalpha(), isdecimal(), isdigit(), isnumeric() and isspace() answer different questions. They report whether every character satisfies a category; an empty…

2 views Oct 17, 2026

Python Choose a List or Tuple for Everyday Data

A list is mutable: it supports insertions, deletions and reassignment. A tuple is immutable: its element references cannot be reassigned after creation. Choose based on whether the number a…

2 views Oct 17, 2026

Python chr() Function: Usage and Examples

The built-in chr(number) returns the Unicode character with a given valid code point. It is the reverse operation of ord() for valid values. See two practical examples, edge cases and commo…

2 views Oct 17, 2026

Python Conditional List Comprehensions

A conditional list comprehension can filter values using a trailing if clause. An inline conditional expression before for chooses an output for every item instead of removing items. See tw…

2 views Oct 17, 2026

Python Copying Lists: Assignment vs Slicing vs copy()

Assignment copies a reference, not a list. Slicing with [:] and list.copy() create a new outer list but share nested objects. Understanding the difference prevents changes from appearing in…

2 views Oct 17, 2026

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