title: Call Python class methods from the command line
body: <p>so I wrote some class in a Python script like:</p>
  
  <pre><code>#!/usr/bin/python
  import sys
  import csv
  filepath = sys.argv[1]
  
  class test(object):
      def __init__(self, filepath):
          self.filepath = filepath
  
      def method(self):
          list = []
          with open(self.filepath, "r") as table:
              reader = csv.reader(table, delimiter="\t")
              for line in reader:
                  list.append[line]
  </code></pre>
  
  <p>If I call this script from the command line, how am I able to call method?
  so usually I enter: $ python test.py test_file
  Now I just need to know how to access the class function called "method".</p>