title: "WindowsError: [Error 2] The system cannot find the file specified" is not resolving
body: <p>I have created exe file of my python project by py2exe which have number of files.
  when i run this exe file in my system. it works fine but if i put it in another system then it opens login form, then after it doesn't go to next window which i have written in 2nd python file. it gives me below error in log file.</p>
  
  <pre><code>Traceback (most recent call last):
        File "login.py", line 246, in DataReader
        File "subprocess.pyo", line 711, in __init__
        File "subprocess.pyo", line 948, in _execute_child
      WindowsError: [Error 2] The system cannot find the file specified
  </code></pre>
  
  <p>I know that it is duplicate question but I have tried many solution of stackoverflow but i didn't resolve this issue. Somebody help me for resolving this issue.</p>
  
  <p>And After login successfully it will go to start.py file by this code, But it is not going and giving above error.</p>
  
  <pre><code>    subprocess.call(["python", "./start.py"])
  </code></pre>
  
  <p>Thanks in advance</p>