Python - For Loop
You have a list of lists:
data = [[1, 2], [3, 4], [5, 6]]. How do you print all numbers one by one using iteration?You have a list of lists: data = [[1, 2], [3, 4], [5, 6]]. How do you print all numbers one by one using iteration?
hard📝 Application Q15 of 15
Step-by-Step Solution
Solution:
Step 1: Understand nested lists and iteration
Each item in data is a list itself, so we need two loops: one for each sublist, one for numbers inside.Step 2: Use nested for loops to access all numbers
The outer loop goes through each sublist, the inner loop prints each number inside that sublist.Final Answer:
for sublist in data: for num in sublist: print(num) -> Option BQuick Check:
Nested loops print all inner items [OK]
Quick Trick: Use nested loops for lists inside lists [OK]
Common Mistakes:
MISTAKES- Trying to print sublists directly
- Using single loop only
- Accessing wrong indexes causing errors
Master "For Loop" in Python
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