File types and associations in Intro to Computing - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to identify the file type by its extension.

Intro to Computing

file_name = "document[1]"
if file_name.endswith('.txt'):
    print("This is a text file.")

Drag options to blanks, or click blank then click option'

A.docx

B.pdf

C.jpg

D.txt

Attempts:

3 left

💡 Hint

Common Mistakes

Choosing an extension that does not represent a text file.

Forgetting the dot before the extension.

The .txt extension indicates a text file. The code checks if the file name ends with .txt to identify it.

2fill in blank

medium

Complete the code to open an image file based on its extension.

Intro to Computing

file_name = "photo[1]"
if file_name.endswith('.png') or file_name.endswith('.jpg'):
    print("Open image viewer")

Drag options to blanks, or click blank then click option'

A.gif

B.jpg

C.mp3

D.txt

Attempts:

3 left

💡 Hint

Common Mistakes

Selecting an audio or text file extension instead of an image.

Confusing file extensions with similar names.

The .jpg extension is a common image file type. The code checks if the file ends with .jpg or .png to open it with an image viewer.

3fill in blank

hard

Fix the error in the code to correctly associate a file type with its program.

Intro to Computing

file_extension = '.pdf'
if file_extension == [1]:
    print("Open with PDF reader")

Drag options to blanks, or click blank then click option'

Apdf

BPDF

C.pdf

Dpdf.

Attempts:

3 left

💡 Hint

Common Mistakes

Omitting the dot in the extension string.

Using uppercase letters inconsistently.

The file extension includes the dot, so it must be '.pdf' to match the variable file_extension.

4fill in blank

hard

Fill both blanks to create a dictionary mapping file extensions to their associated programs.

Intro to Computing

file_associations = { [1]: "Text Editor", [2]: "Image Viewer" }

Drag options to blanks, or click blank then click option'

A".txt"

B".mp3"

C".jpg"

D".exe"

Attempts:

3 left

💡 Hint

Common Mistakes

Using extensions that do not match the program type.

Forgetting to include quotes around the extensions.

The dictionary maps ".txt" to a text editor and ".jpg" to an image viewer, matching common file type associations.

5fill in blank

hard

Fill all three blanks to filter file names by extension and create a list of those files.

Intro to Computing

files = ["doc1.txt", "image.png", "song.mp3", "notes.txt"]
txt_files = [f for f in files if f.endswith([1]) or f.endswith([2])]
print(txt_files)  # Should print files ending with [3]

Drag options to blanks, or click blank then click option'

A".txt"

B".mp3"

D".png"

Attempts:

3 left

💡 Hint

Common Mistakes

Using different extensions that do not match the comment.

Mixing image or audio extensions instead of text.

The code filters files ending with .txt to create a list of text files. Both blanks use ".txt" to check the extension, and the comment confirms this.