title: How to use Python 3.6 interpreter inside a bash script?
body: <p>I want to have a little script, that will find, run and report about all the tests in the folder, like this one:</p>
  
  <pre><code>#!/bin/bash 
  coverage run -m unittest discover 
  coverage report -m 
  </code></pre>
  
  <p>But, when I run it, I get some errors, which I do not get on Windows (like using of <code>super()</code> without an argument). As I've understood, it's connected with the fact, that build-in and default version of Python on Linux is 2.x, whereas I am using 3.6. How should I change the script, so it would use Python 3.6 interpreter?</p>
  
  <p>EDIT:
  So here's one of the files with tests that I run:</p>
  
  <pre><code>#!/usr/bin/env python3
  import unittest
  import random
  import math
  import sort_functions as s
  from comparison_functions import less, greater
  
  
  class BaseTestCases:
      class BaseTest(unittest.TestCase):
          sort_func = None
  
          def setUp(self):
              self.array_one = [101, -12, 99, 3, 2, 1]
              self.array_two = [random.random() for _ in range(100)]
              self.array_three = [random.random() for _ in range(500)]
              self.result_one = sorted(self.array_one)
              self.result_two = sorted(self.array_two)
              self.result_three = sorted(self.array_three)
  
          def tearDown(self):
              less.calls = 0
              greater.calls = 0
  
          def test_sort(self):
              result_one = self.sort_func(self.array_one)
              result_two = self.sort_func(self.array_two)
              result_three = self.sort_func(self.array_three)
              self.assertEqual(self.result_one, result_one)
              self.assertEqual(self.result_two, result_two)
              self.assertEqual(self.result_three, result_three)
  
      # and some more tests here       
  
  
  class TestBubble(BaseTestCases.BaseTest):
      def setUp(self):
      self.sort_func = s.bubble_sort
      super().setUp()
  
  # and some more classes looking like this
  </code></pre>
  
  <p>And the error:</p>
  
  <pre><code>ERROR: test_key (test_sort_func.TestBubble)
  ----------------------------------------------------------------------
  Traceback (most recent call last):
  File "/home/lelik/Desktop/Sorters/test_sort_func.py", line 67, in setUp
  super().setUp()
  TypeError: super() takes at least 1 argument (0 given)
  </code></pre>