Suppose that the line var ['b'] var be (select ALL that apply)? string list dictionary == 'y' evaluates to True. Which of the following types could
Suppose that the line var ['b'] var be (select ALL that apply)? string list dictionary == 'y' evaluates to True. Which of the following types could
Computer Networking: A Top-Down Approach (7th Edition)
7th Edition
ISBN:9780133594140
Author:James Kurose, Keith Ross
Publisher:James Kurose, Keith Ross
Chapter1: Computer Networks And The Internet
Section: Chapter Questions
Problem R1RQ: What is the difference between a host and an end system? List several different types of end...
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![**Question**
Suppose that the line `var['b'] == 'y'` evaluates to True. Which of the following types could var be (select ALL that apply)?
- [ ] string
- [ ] list
- [ ] dictionary
**Explanation**
The code snippet `var['b'] == 'y'` checks if the value associated with the key 'b' in a data structure is equal to 'y'.
- **String**: Strings do not support key-value pair indexing, and attempting to index them with a string like `'b'` would result in an error. Thus, var cannot be a string.
- **List**: Lists are index-based with integer indices and do not use keys. Therefore, var cannot be a list.
- **Dictionary**: Dictionaries in Python hold key-value pairs, and you can access an element using the key. If `var['b']` evaluates to 'y', var is likely a dictionary with 'b' as a key and 'y' as its corresponding value. Hence, var can be a dictionary.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F6fc09ca6-cf80-4929-a335-dec91559848e%2F03b66b66-a5b1-42f8-9c1c-bdc588b0f7c9%2Fj8s8zf_processed.jpeg&w=3840&q=75)
Transcribed Image Text:**Question**
Suppose that the line `var['b'] == 'y'` evaluates to True. Which of the following types could var be (select ALL that apply)?
- [ ] string
- [ ] list
- [ ] dictionary
**Explanation**
The code snippet `var['b'] == 'y'` checks if the value associated with the key 'b' in a data structure is equal to 'y'.
- **String**: Strings do not support key-value pair indexing, and attempting to index them with a string like `'b'` would result in an error. Thus, var cannot be a string.
- **List**: Lists are index-based with integer indices and do not use keys. Therefore, var cannot be a list.
- **Dictionary**: Dictionaries in Python hold key-value pairs, and you can access an element using the key. If `var['b']` evaluates to 'y', var is likely a dictionary with 'b' as a key and 'y' as its corresponding value. Hence, var can be a dictionary.
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