title: I can't run python file interactivly with terminal
body: <p>I'm using OSX Mac terminal to run python 2.7.10.</p>
  
  <p>for example:</p>
  
  <p>I have a file called "myfile.py" </p>
  
  <p>so when I want to run it on the terminal it would be like this:</p>
  
  <pre><code>python Desktop/myfile.py
  </code></pre>
  
  <p>However inside the file I have wrote some functions like</p>
  
  <pre><code>def myFunction(x,y):
      return float(x)/y
  </code></pre>
  
  <p>with this method of running a python script I can not interact with my program and use myFunction to input x and y with different values every time and test myFunction properly. </p>
  
  <p>Thank You,</p>