title: "Syntax error: Unterminated quoted string" error when calling a bash script from Python
body: <p>I have a situation where, I need to call a bash script inside a python script which is in turn called inside another python script.</p>
  
  <p>download-output-files.py:</p>
  
  <pre><code>#!/usr/bin/env python
  import os
  import sys
  
  for i in node_path:
      cmd="python watcher.py "+i
      os.system(cmd) ##calling another python script
  </code></pre>
  
  <p>watcher.py:</p>
  
  <pre><code>#!/usr/bin/env python
  import os
  import time
  
          if 'finish' in child:
              print "finish found"
          cmd="./copy_output_file.sh "+node   
          os.system(cmd) ##Calling shell script here
  </code></pre>
  
  <p>copy_output_file.sh:</p>
  
  <pre><code>#!/bin/bash
  
  filepath=$1
  cp ff /home/likewise-open/TALENTICA-ALL/mayankp/kazoo/$filepath
  </code></pre>
  
  <p>When I run <strong>download-output-files.py</strong> , it calls <strong>watcher.py</strong> , which in turn calls <strong>copy_output_file.sh</strong> and below is the error I face:</p>
  
  <pre><code>mayankp@mayankp:~/kazoo$ python download-output-files.py 
  
  finish found
  sh: 1: Syntax error: Unterminated quoted string
  </code></pre>
  
  <p>When I run the same commands in Python shell, it runs bash script successfully. What am I missing?</p>