Iterating through data structures

Computing

In this unit pupils will discover how data is represented and processed in sequences, such as lists and strings. They will cover a spectrum of operations on sequences of data, that range from accessing an individual element to manipulating the entire sequence though real world practical activites.

Python programming with sequences of data

A {{}} is a data type that is a collection of characters.

Lists are {{}}, which means that their contents can be modified, without having to create a new list. 

Which code would check the first character of name1 does not appear anywhere in name2?

Which of the following statements about strings is true?

What code would you use if you wanted to check the value of the first letter held in the string: `message = "Hello"`?

If you update the value held by a string, the previous value is {{}}.

What is the correct syntax in Python to initialise a variable called age and set its value to the numerical value 13?

What is the correct syntax in Python to initialise a variable called name and set its value to Laura?

Which programming construct is used to repeatedly perform actions in a program?    

{{}} are used to tell a program whether a condition has been met or not. 

```colours = ["red", "blue", "yellow", "green"]
print (colours[1])```

What colour would be printed by the program?

This lesson will be removed by end of Summer Term 2025.

Iterating through data structures

Lesson outcome

This lesson will be removed by end of Summer Term 2025.