title: How to count the number of Chinese, Korean and English words
body: <p>I have a sentence mixed with Chinese, Korean and English words. I used the <code>len()</code> function in Python but it gave me the wrong answer. For example, we have the string </p>
  
  <p><code>a = '여보세요，我是Jason. Nice to meet you☺❤'</code></p>
  
  <p>The correct word number, excluding punctuations, is 13, but <code>len(a) = 32</code></p>
  
  <p>How to count the number of words correctly?</p>
  
  <p>Thank you very much.</p>