Basic example
Input
enumerate_pairs(['a', 'b', 'c'])
Output
[(0, 'a'), (1, 'b'), (2, 'c')]
Each element is paired with its index in a tuple.
Full lesson preview
Index and Value with Enumerate
Use enumerate to access both the index and value while iterating a sequence.
Python practice6 minLoops & IterationBeginnerLast updated March 15, 2026
Problem statement
Given a list, return a new list containing tuples where each tuple holds the index and the corresponding value from the input list. Use Python's enumerate to access both index and value while iterating.
Task
Learn to produce a list of (index, value) pairs from an input sequence using enumerate.
Examples
Input format
A single list argument: enumerate_pairs(lst)
Output format
A list of tuples: [(index0, value0), (index1, value1), ...]
Constraints
- The input may be empty.
- Elements may be of any type.
- Preserve order and use zero-based indexing.
Samples
Sample 1
Input
enumerate_pairs([10, 20])
Output
[(0, 10), (1, 20)]
Two elements become two (index, value) tuples.