Pythonbeginner6 min read
Lists
Storing Multiple Items with Lists
Learning Goals
1
Understand the purpose and application of Lists in Python projects.2
Implement clean, functional code demonstrating Lists syntax.3
Identify and avoid common coding mistakes associated with lists.4
Apply Lists features to solve a realistic beginner-level development task.The Core Concept
Lists are ordered, mutable (changeable) collections of items. They can hold items of different data types and are one of the most frequently used data structures in Python.
Visual guide
Python automation process
A simple original diagram to connect the lesson idea with real project flow.
1Input
2Script
3Process
4Save output
5Review result
Code & Implementation
python
fruits = ["apple", "banana", "cherry"]
fruits.append("orange")
fruits[1] = "blueberry"
print(fruits)Expected Output
['apple', 'blueberry', 'cherry', 'orange']
Expense Manager
Hands-on practice task
The Challenge
Build an application to track user expenses. Users should be able to add an expense, view all expenses, and see the total money spent.
Helpful Hints
- •Use a list of dictionaries to store expenses, e.g., {'item': 'food', 'cost': 15}.
- •Create a menu using a while loop.
- •Write functions to add expenses and calculate the total.
Quick Knowledge Check
Can a list contain lists?
Yes, these are called nested lists or 2D arrays.
Continue Learning
Next steps after this lesson
Previous lessonFunctionsNext lessonTuplesExpense ManagerBuild an application to track user expenses. Users should be able to add an expense, view all expenses, and see the total money spent.Duplicate Line RemoverUse this free tool while practicing the lesson.Free Developer Learning HubExplore coding tutorials, tools, projects, automation guides, and resume resources.
Practice task
Build an application to track user expenses. Users should be able to add an expense, view all expenses, and see the total money spent.
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