Computer Science

a collection of data stored digitally, identified by a name

an operation that is specified within a command to open a file, that determines how a file can be used

a Python method which removes any leading and trailing whitespaces or characters that you specify

Reading text files

Records and dictionaries

Dictionary challenge

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

The method used to remove extra spaces or new lines from the beginning and end of a string in Python is called {{}}.

delete any existing content in that file.

add to any existing content in that file.

Which of the following correctly opens a file named "data.txt" in read mode?

Once you have finished working with a file, you should always {{}} it to free up system resources.

Which method reads an entire file and returns it as a string?

What type of brackets are used to define a dictionary in Python?

What type of brackets are used to define a list in Python?

a property or characteristic of an entity

List items are separated by {{}} in Python.

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

What will be the output of this code?
```my_list = [3, 6, 9, 12]  
my_list.append(15)  
print(my_list)```

Starter Quiz

What type of brackets are used to define a dictionary in Python?