Question

The function below takes two arguments: a dictionary of strings (keys) to integers (values) a_dict and a list of strings key_list. All of the strings in the list are keys to the dictionary. Complete the function such that it looks up each of the keys in the list and returns a list of their associated values. The order of the values in the list is based on the order of the keys in key_list. For example, with the dictionary {"puffin": 5, "corgi": 2, "three": 3} and the list ["three", "corgi"], your function should return [3, 2]. student.py

Answer 1

Answer:

1. def getData(a_dict, key_list):
2.    result = []
4.    for key in key_list:
5.        result.append(a_dict[key])
6.    
7.    return result  
9. result = getData( {"puffin": 5, "corgi": 2, "three": 3} , ["three", "corgi"])
10. print(result)

Explanation:

Let's define a function getData() with two parameters, a_dict and key_list as required by the question (Line 1).

Since the function is to return a list of associated values of dictionaries, a new list, result,  is declared and initialized with empty values (Line 2).

Next, use for-loop to traverse through every string in the input key_list (Line 4) and use the traversed key to address the value in the a_dict and add it to the result list (Line 5)

At last, return the result list as output (Line 7)

We can test the function using the test case from the question and we shall see the output as follows:

[3, 2]