title: Generating allure report using pytest
body: <p>I am using py test allure adaptor and trying to generate input data required for allure report. But I am not able to generate any XML's. When I execute the py file using py.test sample.py, it did create <strong>pycache</strong> dir. Then I executed "allure generate -v 1.3.9 C:\allurereports" (This is the dir where I had the sample.py). It did create an allure html report but no of test cases was 0. No details were present.</p>
  
  <p>The sample.py(it is same as given in the example)</p>
  
  <pre><code>import allure
  
  
  @allure.feature('Feature1')
  @allure.story('Story1')
  def test_minor():
      assert False
  
  
  @allure.feature('Feature2')
  @allure.story('Story2', 'Story3')
  @allure.story('Story4')
  class TestBar:
  
      # will have 'Feature2 and Story2 and Story3 and Story4'
      def test_bar(self):
          pass
  </code></pre>
  
  <p>Here's the py.test command used:
  py.test sample.py --allure_features=feature1,feature2 </p>
  
  <p>Can anybody help me how to generate an allure report from the file? What are the commands to execute? </p>