title: Mapping Array of Dictionary
body: <p>i want to multiply data inside of array in dictionary. Here's the data.</p>
  
  <pre class="lang-py prettyprint-override"><code>data = [
    {"data_1": 2, "data_2": 2, "country": "France"},
    {"data_1": 4, "data_2": 4, "country": "UK"},
    {"data_1": 6, "data_2": 6, "country": "USA"},
  ]
  </code></pre>
  
  <p>And multiply the data_1 to 5 so the data is like</p>
  
  <pre class="lang-py prettyprint-override"><code>data = [
    {"data_1": 10, "data_2": 2, "country": "France"},
    {"data_1": 20, "data_2": 4, "country": "UK"},
    {"data_1": 30, "data_2": 6, "country": "USA"},
  ]
  </code></pre>
  
  <p>I know the clue is using map, or lambda function. But I have no idea how to do it. Thank you.</p>