Code Explanation:
🔹 1. Creating the List
nums = [1, 2, 3]
✅ Explanation:
A list named nums is created.
Current list:
[1, 2, 3]
🔹 2. Starting the Loop
for x in nums:
✅ Explanation:
Python starts iterating through the list.
⚠️ Important:
The loop is reading from the SAME list that we're modifying.
This is why the code becomes tricky.
🔹 3. First Iteration
Current Value
x = 1
Append Value
nums.append(x)
Equivalent to:
nums.append(1)
List becomes:
[1, 2, 3, 1]
Check Length
if len(nums) > 6:
Current length:
4
Condition:
4 > 6
Result:
False
No break.
🔹 4. Second Iteration
Current Value
x = 2
Append
nums.append(2)
List becomes:
[1, 2, 3, 1, 2]
Check Length
5 > 6
Result:
False
No break.
🔹 5. Third Iteration
Current Value
x = 3
Append
nums.append(3)
List becomes:
[1, 2, 3, 1, 2, 3]
Check Length
6 > 6
Result:
False
Still no break.
🔹 6. Fourth Iteration
⚠️ Interesting Part
Because we appended values,
the loop continues into the newly added elements.
Current value:
x = 1
(the appended 1)
Append Again
nums.append(1)
List becomes:
[1, 2, 3, 1, 2, 3, 1]
Check Length
Current length:
7
Condition:
7 > 6
Result:
True
🔹 7. Break Statement
break
✅ Explanation:
Loop immediately stops.
No more iterations happen.
🔹 8. Printing the List
print(nums)
Final list:
[1, 2, 3, 1, 2, 3, 1]
🎯 Final Output
[1, 2, 3, 1, 2, 3, 1]
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