title: How to store the result of an executed shell command in a variable in python?
body: <p>I need to store the result of a shell command that I executed in a variable, but I couldn't get it working. I tried like:</p>
  
  <pre><code>import os    
  
  call = os.system("cat syscall_list.txt | grep f89e7000 | awk '{print $2}'")
  print call
  </code></pre>
  
  <p>But it prints the result in terminal and prints the value of call as zero, possibly indicating as success. How to get the result stored in a variable?</p>