Computer Science

a collection of attributes for a single entity

an entity is a single object, place, person or thing

properties or characteristics of an entity

a data structure that involves creating data pairings that can be located using a key

used to identify each attribute held in the dictionary

Records and dictionaries

Dictionary challenge

Reading text files

Writing to text files

Reading CSV files

Writing to CSV files

Careers in programming

Programming project - dictionaries I

Programming project - dictionaries II

This unit introduces pupils to the new data structures of records and dictionaries. They will develop a Caesar cipher encryption program using a dictionary as a cipher wheel. Pupils will explore how data can be read from and written to files and how this data can be used within a program.

Programming: dictionaries and data files

a property or characteristic of an entity

What will be the output of the following code?
```player = { "username" : "rockstar", "password" : "6goatsEating", "score" : 5328 }  
print(player["username"])```

a data structure that involves creating data pairings

How is a record typically represented in Python?

by reassigning a value using the key, e.g. `player["score"] = 9000`

How can you modify a value in a dictionary?

Which of the following correctly defines a list in Python?

Match the list operation with its description.

`["orange", "apple", "banana", "cherry"]`

`["apple", "banana", "cherry", "orange"]`

What will be the output of the following code?
```fruits = ["apple", "banana", "cherry"]
fruits.append("orange")
print(fruits)```

converts all letters in a string to uppercase

converts all letters in a string to lowercase

What does the `.upper()` method do in Python?

What will be the output of the following code?
```word = "PYTHON"
print(word[2])```

Strings can hold letters, numbers, and symbols, and they must be enclosed in {{}}.

This lesson was made for home learning during the pandemic.

Records and dictionaries

Lesson outcome

This lesson was made for home learning during the pandemic.