Reading JSON data from an API response
Name:
Date:
Class:
A
Quick Questions
Shade in the A or B circle for each question.
1. Which line turns the JSON text of an API response into a Python dictionary or list?
2. The API returns {"city": "Perth", "temp": 31}. After data = response.json(), how do you read the temperature?
3. True or false: response.json() returns a Python dictionary or list, not a plain string.
4. Which choice reads the 'name' value from the dictionary data?
5. The JSON response is a list of results: [{"name": "Ava"}, {"name": "Liam"}]. How do you print every name?
B
Match the Pairs
Draw a line connecting each item on the left to its match on the right.
| Left column | Right column | |
|---|---|---|
| 1data = response.json() | Aresponse = requests.get(url) data = response.json() | |
| 2print(data['name']) | Bfor item in data['results']: print(item['title']) | |
| 3Looping over a list of results in the JSON data so each item can be read by key | CDictionary values from response.json() must be read with square brackets and a key, not with dot notation. | |
| 4After calling the API, convert the JSON response to Python data before reading any keys | DReads the value stored under the key 'name' in the dictionary created from the JSON | |
| 5data = response.json print(data['name']) | EConverts the JSON text of the API response into a Python dictionary or list stored in data | |
| 6data = response.json() print(data.name) | Fresponse.json is missing its brackets, so it stores the method itself instead of calling it and the JSON is never converted. |
C
Definitions
response.json()
D
Fill in the Blanks
Complete each line of code by filling in the missing parts.
1.
response = requests.get(url)
data = response.____()
2.
data = response.json()
name = ____['name']
3.
data = response.json()
___ item in data['results']:
print(item['name'])
4.
data = response.json()
total = ___(data['results'])
5.
data = response.json()
first = data['results'][_]
print(first['name'])
E
Spot the Error
Shade in the letter of the line that contains an error.
Question 1
A
import requests
B
r = requests.get(url)
C
data = r.json()
D
print(data.name)
Question 2
A
r = requests.get(url)
B
data = r.json
C
print(data['city'])
Question 3
A
r = requests.get(url)
B
data = response.json()
C
print(data['temp'])
Question 4
A
data = r.json()
B
for item in data('results'):
C
print(item['title'])
Question 5
A
data = r.json()
B
total = 0
C
for p in data['items']:
D
total += data['price']
E
print(total)
Answer Key
Reading JSON data from an API response
Section A: Quick Questions
Q1
B — data = response.json()
Q2
A — data['temp']
Q3
A — True
Q4
B — data['name']
Q5
A — for item in data: print(item['name'])
Section B: Match the Pairs
Q1
data = response.json() → Converts the JSON text of the API response into a Python dictionary or list stored in data
Q2
print(data['name']) → Reads the value stored under the key 'name' in the dictionary created from the JSON
Q3
Looping over a list of results in the JSON data so each item can be read by key → for item in data['results']:
print(item['title'])
Q4
After calling the API, convert the JSON response to Python data before reading any keys → response = requests.get(url)
data = response.json()
Q5
data = response.json
print(data['name']) → response.json is missing its brackets, so it stores the method itself instead of calling it and the JSON is never converted.
Q6
data = response.json()
print(data.name) → Dictionary values from response.json() must be read with square brackets and a key, not with dot notation.
Section C: Definitions
Q1
response.json() — Converts the JSON text of an API response into Python dictionaries and lists, so you can read values by key, e.g. data['name'], or loop over a list of results.Section D: Fill in the Blanks
Q1
response = requests.get(url)
data = response.json()Q2
data = response.json()
name = data['name']Q3
data = response.json()
for item in data['results']:
print(item['name'])Q4
data = response.json()
total = len(data['results'])Q5
data = response.json()
first = data['results'][0]
print(first['name'])Section E: Spot the Error
Q1
D — response.json() gives a dictionary, and dictionary values are read by key with square brackets. Dot notation does not work on a dictionary. It should be print(data['name']).
Q2
B — json is a method, so it needs brackets to run. Without them, data just holds the method itself instead of the dictionary. It should be data = r.json().
Q3
B — The response was stored in the variable r, so response is not defined and causes a NameError. It should be data = r.json().
Q4
B — data is a dictionary, not a function, so it cannot be called with round brackets. A key is read with square brackets. It should be for item in data['results']:.
Q5
D — data is the whole dictionary and has no 'price' key. The price belongs to each item, so the loop variable p must be used: total += p['price'].