title: How to find min/max values from rows and columns in Python?
body: <p>I was wondering how can I find minimum and maximum values from a dataset, which is basically a text file. It has 50 rows, 50 columns.</p>
  
  <p>I know I can set up a control loop (for loop to be specific) to have it read each row and column, and determine the min/max values. But, I'm not sure how to do that. </p>
  
  <p>I think the rows and columns need to be converted to list first and then I need to use the <code>split()</code> function. I tried setting something up as follows, but it doesn't seem to work:</p>
  
  <pre><code>for x in range(4,50): # using that range as an example
      x.split()
      max(4,50)
      print x
  </code></pre>
  
  <p>New to Python. Please excuse my mistakes.</p>