程式碼執行

import os
import google.generativeai as genai

genai.configure(api_key=os.environ['API_KEY'])

model = genai.GenerativeModel(
    model_name='gemini-1.5-pro',
    tools='code_execution')

response = model.generate_content((
    'What is the sum of the first 50 prime numbers? '
    'Generate and run code for the calculation, and make sure you get all 50.'))

print(response.text)

```python
def is_prime(n):
  """Checks if a number is prime."""
  if n <= 1:
    return False
  for i in range(2, int(n**0.5) + 1):
    if n % i == 0:
      return False
  return True

def sum_of_primes(n):
  """Calculates the sum of the first n prime numbers."""
  primes = []
  i = 2
  while len(primes) < n:
    if is_prime(i):
      primes.append(i)
    i += 1
  return sum(primes)

# Calculate the sum of the first 50 prime numbers
sum_of_first_50_primes = sum_of_primes(50)

print(f"The sum of the first 50 prime numbers is: {sum_of_first_50_primes}")
```

**Explanation:**

1. **`is_prime(n)` Function:**
   - Takes an integer `n` as input.
   - Returns `False` for numbers less than or equal to 1 (not prime).
   - Iterates from 2 up to the square root of `n`. If `n` is divisible by any
     number in this range, it's not prime, and we return `False`.
   - If the loop completes without finding a divisor, the number is prime, and
     we return `True`.

2. **`sum_of_primes(n)` Function:**
   - Takes an integer `n` (number of primes desired) as input.
   - Initializes an empty list `primes` to store the prime numbers.
   - Starts a loop, iterating through numbers starting from 2.
   - For each number `i`, it checks if it's prime using the `is_prime()` function.
   - If `i` is prime, it's appended to the `primes` list.
   - The loop continues until the `primes` list has `n` prime numbers.
   - Finally, it calculates and returns the sum of all the prime numbers in the
     `primes` list.

3. **Main Part:**
   - Calls `sum_of_primes(50)` to get the sum of the first 50 prime numbers.
   - Prints the result.

**Output:**

```
The sum of the first 50 prime numbers is: 5117
```

import os
import google.generativeai as genai

genai.configure(api_key=os.environ['API_KEY'])

model = genai.GenerativeModel(model_name='gemini-1.5-pro')

response = model.generate_content(
    ('What is the sum of the first 50 prime numbers? '
    'Generate and run code for the calculation, and make sure you get all 50.'),
    tools='code_execution')

print(response.text)

import os
import google.generativeai as genai

genai.configure(api_key=os.environ['API_KEY'])

model = genai.GenerativeModel(model_name='gemini-1.5-pro',
                              tools='code_execution')

chat = model.start_chat()

response = chat.send_message((
    'What is the sum of the first 50 prime numbers? '
    'Generate and run code for the calculation, and make sure you get all 50.'))

print(response.text)