Count words with the letter 'w' in them but only the(almost done) : <p>So the goal is to count the number of words in the sentence with the letter 'w', and I have written the code to count the number of w's but I can't get it to count the words in total. </p>

<pre><code>items = ["whirring", "wow!", "calendar", "wry", "glass", "", "llama","tumultuous","owing"]
items = str(items)
acc_num = 0
for i in items:
    if i in ['w']:
        acc_num += 1
print(items)
</code></pre>
