What is the output of the following code? sum= 0 for i in range(1, 10): if i % 3: continue sum += i 3 print(sum)

Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Chapter1: Introduction
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**Question:** What is the output of the following code?

```python
sum = 0

for i in range(1, 10):
    if i % 3:
        continue
    sum += i

print(sum)
```

**Explanation:**

1. **Initialization:**
   ```python
   sum = 0
   ```
   This line initializes a variable `sum` to 0.

2. **For Loop:**
   ```python
   for i in range(1, 10):
   ```
   This loop iterates over the integers from 1 to 9 (inclusive at start, exclusive at end).

3. **Condition and Continue:**
   ```python
   if i % 3:
       continue
   ```
   This condition checks if the current value of `i` is not a multiple of 3 (`i % 3` evaluates to `True` if `i` is not a multiple of 3). If this condition is true, the `continue` statement is executed, which skips the rest of the code inside the loop for the current iteration.

4. **Sum Accumulation:**
   ```python
   sum += i
   ```
   This line adds the value of `i` to `sum`, but only if `i` is a multiple of 3 (because the non-multiples of 3 are skipped by the `continue` statement).

5. **Printing the Result:**
   ```python
   print(sum)
   ```
   Finally, it prints the value of `sum`.

**Detailed Steps of Execution:**

- For `i = 1`: `1 % 3` is `True` -> `continue` (sum remains 0)
- For `i = 2`: `2 % 3` is `True` -> `continue` (sum remains 0)
- For `i = 3`: `3 % 3` is `False` -> `sum += 3` (sum becomes 3)
- For `i = 4`: `4 % 3` is `True` -> `continue` (sum remains 3)
- For `i = 5`: `5 % 3` is `True` -> `continue` (sum remains 3)
- For `i = 6`: `6 % 3` is `False` -> `sum += 6` (sum becomes
Transcribed Image Text:**Question:** What is the output of the following code? ```python sum = 0 for i in range(1, 10): if i % 3: continue sum += i print(sum) ``` **Explanation:** 1. **Initialization:** ```python sum = 0 ``` This line initializes a variable `sum` to 0. 2. **For Loop:** ```python for i in range(1, 10): ``` This loop iterates over the integers from 1 to 9 (inclusive at start, exclusive at end). 3. **Condition and Continue:** ```python if i % 3: continue ``` This condition checks if the current value of `i` is not a multiple of 3 (`i % 3` evaluates to `True` if `i` is not a multiple of 3). If this condition is true, the `continue` statement is executed, which skips the rest of the code inside the loop for the current iteration. 4. **Sum Accumulation:** ```python sum += i ``` This line adds the value of `i` to `sum`, but only if `i` is a multiple of 3 (because the non-multiples of 3 are skipped by the `continue` statement). 5. **Printing the Result:** ```python print(sum) ``` Finally, it prints the value of `sum`. **Detailed Steps of Execution:** - For `i = 1`: `1 % 3` is `True` -> `continue` (sum remains 0) - For `i = 2`: `2 % 3` is `True` -> `continue` (sum remains 0) - For `i = 3`: `3 % 3` is `False` -> `sum += 3` (sum becomes 3) - For `i = 4`: `4 % 3` is `True` -> `continue` (sum remains 3) - For `i = 5`: `5 % 3` is `True` -> `continue` (sum remains 3) - For `i = 6`: `6 % 3` is `False` -> `sum += 6` (sum becomes
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