Folder hierarchy and paths in Intro to Computing - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to show the root folder in a file path.

Intro to Computing

root = "[1]"

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

Ausers

B/

Cdocuments

Dhome

Attempts:

3 left

💡 Hint

Common Mistakes

Using a subfolder name like 'home' or 'users' as the root folder.

Confusing the root folder with other folder names.

The root folder in a file path is represented by a single slash "/". It is the top-level directory.

2fill in blank

medium

Complete the code to join folder names into a path using the correct separator.

Intro to Computing

path = "home" + [1] + "documents"

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

A/

B\\

C:

D-

Attempts:

3 left

💡 Hint

Common Mistakes

Using backslash \\ which is used in Windows paths.

Using symbols like ':' or '-' which are not folder separators.

The forward slash "/" is used as a folder separator in Unix-like systems to join folder names into a path.

3fill in blank

hard

Fix the error in the path string by replacing the wrong separator.

Intro to Computing

path = "C:[1]Users[1]Documents"

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

A/

B:

C-

D\\

Attempts:

3 left

💡 Hint

Common Mistakes

Using forward slash "/" in Windows paths.

Using colon ":" as a separator.

Windows paths use backslash \\ as the folder separator. The code needs \\ instead of "/" or ":".

4fill in blank

hard

Fill both blanks to create a relative path from 'documents' to 'photos'.

Intro to Computing

relative_path = "[1]" + [2] + "photos"

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

A..

B/

C\\

D.

Attempts:

3 left

💡 Hint

Common Mistakes

Using "." which means current folder, not parent.

Using backslash \\ in Unix-like paths.

".." means go up one folder level, and "/" is the folder separator in relative paths on Unix-like systems.

5fill in blank

hard

Fill all three blanks to create an absolute path to 'file.txt' inside 'downloads' folder.

Intro to Computing

absolute_path = "/[1]" + [2] + "downloads" + [3] + "file.txt"

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

Ahome

B/

Duser

Attempts:

3 left

💡 Hint

Common Mistakes

Using backslash \\ instead of forward slash "/".

Missing separators between folder names.

The absolute path starts from root "/", then "home" folder, then separator "/", then "downloads", separator "/", and finally the file name.

Practice

1. What does a folder path describe in a computer system?

easy

A. The color of a folder icon

B. The size of a file

C. The location of a file or folder within the folder hierarchy

D. The speed of the computer

Solution

1. Step 1: Understand folder hierarchy

   Folders are like drawers in a cabinet, organizing files and other folders.

2. Step 2: Define folder path

   A folder path tells the computer exactly where to find a file or folder within this hierarchy.

3. Final Answer:

   The location of a file or folder within the folder hierarchy -> Option C

4. Quick Check:

   Folder path = location [OK]

Hint: Folder paths show where files/folders are stored [OK]

Common Mistakes:

• Confusing path with file size
• Thinking path describes folder color
• Assuming path relates to computer speed

2. Which of the following is a correct absolute path on a Windows system?

easy

A. C:\\Users\\Documents\\file.txt

B. /Users/Documents/file.txt

C. Users/Documents/file.txt

D. Documents\\file.txt

Solution

1. Step 1: Identify absolute path format on Windows

   Windows absolute paths start with a drive letter followed by a colon and backslashes, e.g., C:\

2. Step 2: Check each option

   C:\\Users\\Documents\\file.txt uses drive letter C:, backslashes, and full path, so it's correct.

3. Final Answer:

   C:\Users\Documents\file.txt -> Option A

4. Quick Check:

   Windows absolute path = drive letter + backslashes [OK]

Hint: Windows absolute paths start with drive letter and colon [OK]

Common Mistakes:

• Using forward slashes instead of backslashes on Windows
• Missing drive letter in absolute path
• Confusing relative path with absolute path

3. Given the folder structure:

Root/
  FolderA/
    File1.txt
  FolderB/
    File2.txt

If the current folder is Root/FolderA, what file does the relative path ../FolderB/File2.txt point to?

medium

A. Root/FolderA/File1.txt

B. Root/File2.txt

C. Root/FolderA/FolderB/File2.txt

D. Root/FolderB/File2.txt

Solution

1. Step 1: Understand relative path with '..'

   '..' means move up one folder from current folder Root/FolderA to Root.

2. Step 2: Follow the rest of the path

   From Root, go into FolderB, then File2.txt, so full path is Root/FolderB/File2.txt.

3. Final Answer:

   Root/FolderB/File2.txt -> Option D

4. Quick Check:

   Relative path '..' moves up one folder [OK]

Hint: Use '..' to go up one folder in relative paths [OK]

Common Mistakes:

• Not moving up folder with '..'
• Assuming relative path starts from root
• Confusing folder names in path

4. Identify the error in this relative path if the current folder is /home/user/docs: ../../user/docs/file.txt

medium

A. Incorrect folder name 'user' repeated

B. Too many '..' moves up beyond root

C. Path uses forward slashes instead of backslashes

D. Missing drive letter for absolute path

Solution

1. Step 1: Analyze the relative path steps

   Starting at /home/user/docs, '..' moves up to /home/user, second '..' moves up to /home.

2. Step 2: Check the rest of the path

   Then path goes into 'user/docs/file.txt' again, repeating 'user/docs' which is redundant and likely incorrect.

3. Final Answer:

   Incorrect folder name 'user' repeated -> Option A

4. Quick Check:

   Repeated folder names in path indicate error [OK]

Hint: Check if path repeats folders unnecessarily [OK]

Common Mistakes:

• Thinking '..' moves beyond root causes error
• Confusing slash directions on Unix systems
• Expecting drive letters on Unix paths

5. You have a folder structure:

Project/
  src/
    main.py
  data/
    input.csv

If your current folder is Project/src, which relative path correctly accesses input.csv?

hard

A. data/input.csv

B. ../data/input.csv

C. /Project/data/input.csv

D. ./data/input.csv

Solution

1. Step 1: Identify current folder and target file location

   Current folder is Project/src; input.csv is in Project/data.

2. Step 2: Construct relative path

   To reach data from src, move up one folder with '..', then into data/input.csv, so path is '../data/input.csv'.

3. Final Answer:

   ../data/input.csv -> Option B

4. Quick Check:

   Use '..' to go up, then folder name to go down [OK]

Hint: Use '..' to move up, then folder name to move down [OK]

Common Mistakes:

• Using './data/input.csv' which looks inside src/data (doesn't exist)
• Using absolute path without root slash
• Assuming 'data/input.csv' works from src folder