Intro to Computing - How Files and Folders Organize Data
What will be the output of the following Python code?
items = [3, 7, 1, 9, 7] print(items.index(7))
What will be the output of the following Python code?
medium📝 Analysis Q13 of Q15
Step-by-Step Solution
Solution:
Step 1: Understand list and index method
The listitemscontains [3, 7, 1, 9, 7]. Theindex()method returns the first position of the value.Step 2: Find first occurrence of 7
7 appears first at position 1 (0-based index).Final Answer:
1 -> Option DQuick Check:
First 7 at index 1 [OK]
Quick Trick: index() returns first match position [OK]
Common Mistakes:
MISTAKES- Choosing last occurrence index instead of first
- Confusing value with index
- Expecting error due to duplicate values
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