title: How to get code coverage report in PyCharm for Python project
body: <p>I have created a simple addition method in python like 
  [main.py]</p>
  
  <pre><code>class Calculator:
  
      def sum(self,a,b):
          return a+b
  </code></pre>
  
  <p>And I have written test case in [test.py]</p>
  
  <pre><code>from unittest import Testcase
  from main import Calculator
  
  class TestCalculator(TestCase):
  
      def setUp(self):
          self.calc=Calculator()
  
      def test_sum(self):
          answer=self.cals.sum(2,4)
          self.assertEqual(answer,6)
  </code></pre>
  
  <p>Now I want to check code coverage of this code. I am not getting how to get the coverage report in PyCharm IDE. Anyone, please guide if you know how to get the code coverage of the whole project </p>