title: get text from <span> with beautiful soup
body: <p>I want to get text from span tag but i have such problems. 
  I wrote this, </p>
  
  <pre><code>import bs4 as bs
  import urllib.request
  
  page = urllib.request.urlopen('http://www.accuweather.com/en/az/baku/27103/current-weather/27103').read()
  
  soup = bs.BeautifulSoup(page, 'html.parser')
  
  print(soup.find_all('li', class_='wind'))
  </code></pre>
  
  <p>and it returned like that <code>[&lt;li class="wind"&gt;&lt;strong&gt;28 km/h&lt;/strong&gt;&lt;/li&gt;]</code></p>
  
  <p>but I want to get just "28 km/h"</p>
  
  <p>then I tried that </p>
  
  <pre><code>page = urllib.request.urlopen('http://www.accuweather.com/en/az/baku/27103/current-weather/27103').read()
  
  soup = bs.BeautifulSoup(page, 'html.parser')
  
  print(soup.find_all("span" , { "class" : "wind" }))
  </code></pre>
  
  <p>but it did not work either. Please help me with it.</p>