Given a Python dictionary my_dict = {'A': 1, 'B': 2, 'C': 3}, how do you access the value associated with the key 'B'?a) my_dict.get('B')b) my_dict[1]c) my_dict['B']d) my_dict.value('B')
Question
Given a Python dictionary my_dict = {'A': 1, 'B': 2, 'C': 3}, how do you access the value associated with the key 'B'?a) my_dict.get('B')b) my_dict[1]c) my_dict['B']d) my_dict.value('B')
Solution 1
The correct answer is c) my_dict['B']. This is how you access the value associated with the key 'B' in a Python dictionary.
Here's the step by step process:
- Define the dictionary: my_dict = {'A': 1, 'B': 2, 'C': 3}
- Access the value of key 'B': my_dict['B']
When you run my_dict['B'], Python will return the value 2, which is the value associated with the key 'B' in the dictionary.
Option a) my_dict.get('B') is also a valid way to access the value of key 'B', but it's not listed as the correct answer in your options.
Option b) my_dict[1] is incorrect because it's trying to access a key of 1, which doesn't exist in the dictionary.
Option d) my_dict.value('B') is incorrect because there's no method .value() for a Python dictionary.
Solution 2
The correct answer is c) my_dict['B']. This is how you access the value associated with the key 'B' in a Python dictionary. The .get() method can also be used to access the value of a key, but it's not shown correctly in option a). The correct usage would be my_dict.get('B'). Option b) my_dict[1] is incorrect because it's trying to access a key of '1', which doesn't exist in the dictionary. Option d) my_dict.value('B') is incorrect because there is no .value() method for a Python dictionary.
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