title: How to append data to csv file in Robot Framework?
body: <p>I would like to append data to .csv file which is not empty in Robot Framework now, but I meet some questions. </p>
  
  <p>I installed CSVLibrary from 's4int' of 'robotframework-CSVLibrary' in github and it has a keyword named 'Append To Csv File'. I can append data into .csv file but there are some issues with the format.</p>
  
  <p>First I have an empty csv file and I run my scripts in Robot Framework.</p>
  
  <pre><code>*** Settings ***
  Library           Selenium2Library
  Library           CSVLibrary
  
  *** Variables ***
  
  *** Test Cases ***
  test
  ${list}=    Create List    apple    pear
  Append To Csv File    ${file_path}    ${list}   
  </code></pre>
  
  <p>The file is looked like this:</p>
  
  <p><img src="https://i.stack.imgur.com/cR25k.png" alt="enter image description here"></p>
  
  <p>But I expect is:</p>
  
  <p>!<img src="https://i.stack.imgur.com/20mwj.png" alt="enter image description here"></p>
  
  <p>How can I append data to show like what I expect? Is my format wrong? Or is there any other way to realize it? 
  Thanks a lot.</p>