Adding tasks

Add tasks with add_task.

Adding tasks (add_task)

Our empty list is ready. Now we write an add_task function to add tasks. The function takes a title and appends it to the list:

def add_task(title):
    tasks.append(title)

The function reads the tasks list from outside; because the list is at module level. Each call adds a new task to the list.

Calling the function

Let us call our defined function to add tasks:

add_task("Buy bread")
add_task("Buy milk")

Each call adds a new task to the list. The function can use the tasks list from outside because Python functions can access module-level variables.

This approach is common in small scripts; in bigger projects a class structure is preferred.

Exercise Add the add_task function

Define a function called add_task that takes a title parameter and does tasks.append(title) in the body. Add two tasks with add_task("Buy bread") and add_task("Buy milk"). Then print print(tasks).

Show example solution

def add_task(title):
    tasks.append(title)
add_task("Buy bread")
add_task("Buy milk")
print(tasks)

Test yourself

What does tasks.append("Buy bread") do?
- Empties the list
- Removes the first item
- Raises an error
- Adds "Buy bread" to the list
Show answer

Adds "Buy bread" to the list — append adds a new item to the list.

Complete the add_task body

def add_task(title):
    tasks.____(title)

Show answer

def add_task(title):
    tasks.append(title)

Match the function parts

def

Definition keyword
add_task

Function name
title

Parameter
append

List method

Next lesson: Listing tasks

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