Tuples and Dictionaries
CBSE · Class 11 · Computer Science
Complete topic list for Tuples and Dictionaries in CBSE Class 11 Computer Science. Key concepts, sub-topics, and what to focus on for board exams.
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Topics in Tuples and Dictionaries
Tuples: Basic Idea and Creation
- A tuple is an ordered sequence of elements of different data types, such as integer, float, string, list or even a tuple.
- Tuple elements are enclosed in round brackets and separated by commas.
- Tuple elements are accessed by index starting from 0.
Tuple Properties and Operations
- Tuples are immutable; their elements cannot be changed after creation.
- Attempting item assignment on a tuple raises TypeError: 'tuple' object does not support item assignment.
- An element inside a tuple may itself be mutable, such as a list, and that inner list can be modified.
Tuple Methods and Built-in Functions
- len() returns the number of elements in a tuple.
- tuple() creates an empty tuple when no argument is given, and converts a sequence into a tuple when one is passed.
- count() returns how many times an element appears in a tuple.
Tuple Assignment and Nested Tuples
- Tuple assignment allows values from a tuple on the right side to be assigned to variables on the left side.
- The number of variables on the left must be the same as the number of elements in the tuple on the right.
- If the right side is an expression, it is evaluated first and then assigned.
Key Concepts
Central concept: Python data structures for ordered sequences and key-value mapping
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Sources & Official References
- NCERT Official — ncert.nic.in
- CBSE Academic — cbseacademic.nic.in
- CBSE Official — cbse.gov.in
- National Education Policy 2020 — education.gov.in
Content is aligned to the official syllabus. Refer to the board website for the latest curriculum.
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