URLs and their structure in Intro to Computing - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to extract the protocol from the URL string.

Intro to Computing

url = "https://example.com"
protocol = url.split('[1]')[0]

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

A/

B//

C:

D://

Attempts:

3 left

💡 Hint

Common Mistakes

Using '//' instead of '://', which misses the colon.

Using ':' alone, which splits too early.

The protocol part of a URL ends with '://'. Splitting the URL by '://' separates the protocol from the rest.

2fill in blank

medium

Complete the code to get the domain name from the URL.

Intro to Computing

url = "https://example.com/path"
domain = url.split('[1]')[1].split('/')[0]

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

A//

B://

C:

D/

Attempts:

3 left

💡 Hint

Common Mistakes

Splitting by '://', which includes the colon and may cause index errors.

Splitting by '/' first, which splits too early.

Splitting by '//' separates the protocol from the domain and path. The domain is the first part after '//', before the next '/'.

3fill in blank

hard

Complete the code to correctly extract the path from the URL.

Intro to Computing

url = "https://example.com/path/to/page"
path = url.split('//')[1].split('[1]', 1)[1]

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

A//

B://

C/

D:

Attempts:

3 left

💡 Hint

Common Mistakes

Splitting by '://' or '//' which does not isolate the path correctly after the domain.

Splitting by ':' which is unrelated to path separation.

Split by '//' to get domain+path, then split that by '/' (maxsplit=1) to separate the domain from the path. Index [1] gives 'path/to/page'.

4fill in blank

hard

Fill both blanks to create a dictionary mapping URL parts to their values.

Intro to Computing

url = "https://example.com:8080/path?query=1"
parts = {
  'protocol': url.split('[1]')[0],
  'port': url.split(':')[[2]].split('/')[0]
}

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

A://

B1

C2

D//

Attempts:

3 left

💡 Hint

Common Mistakes

Using '//' instead of '://', which misses the colon.

Using index 1 for port, which gets the domain instead.

Splitting by '://' separates the protocol. The port is after the second colon, so index 2 after splitting by ':'.

5fill in blank

hard

Fill all three blanks to extract query parameters as a dictionary.

Intro to Computing

url = "https://example.com/path?user=alice&age=30"
query_string = url.split('[1]')[1]
params = {param.split('[2]')[0]: param.split('[2]')[1] for param in query_string.split('[3]')}

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

A?

B=

C&

D#

Attempts:

3 left

💡 Hint

Common Mistakes

Using '#' instead of '?', which is for fragments.

Using ':' or other symbols instead of '=' or '&'.

The query string starts after '?'. Each parameter is split by '&'. Each key and value are separated by '='.