Robotics & Artificial Intelligence
What is a dictionary in Python?
- A collection of ordered and immutable elements
- A collection of unordered, changeable, and indexed key-value pairs
- A collection of unique elements
- A collection of ordered values with no keys
Answer
A collection of unordered, changeable, and indexed key-value pairs
Reason — A dictionary in Python is defined as a collection of unordered data values that are changeable and indexed. Each element in a dictionary is stored as a key–value pair, where the key is unique and used to access the corresponding value. Dictionaries are enclosed in curly braces {}.
Related Questions
Python offers various data types, including lists, tuples, dictionaries, and sets. These data types determine the types of values a variable can hold and the operations that can be performed on them. A dictionary, for example, is an unordered collection of key-value pairs.
What are the differences between a dictionary and a set in Python?
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- Logical errors
- Linking errors
- Syntax errors
- Runtime errors
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