title: error regexp django urls
body: <p>my <strong>urls.py</strong></p>
  
  <pre><code>from django.urls import path
  from home.views import homePageView, activateUser
  
  urlpatterns = [
      path('',homePageView.as_view(),name='home'),
      path('activate/([a-zA-Z0-9]{15})/$', activateUser.activate, name='activate')
  ]
  </code></pre>
  
  <p>the url on the browser:</p>
  
  <pre><code>http://127.0.0.1:8000/activate/9Eri2DOMYpwI5p8/
  </code></pre>
  
  <p><strong>error:</strong></p>
  
  <pre><code>  Using the URLconf defined in cryptoassistant.urls, Django tried these URL patterns, in this order:
  
      admin/ [name='home'] activate/([a-zA-Z0-9]{15})/$ [name='activate'] activate/([a-zA-Z0-9]{15})/$ [name='activate'] The current path, activate/9Eri2DOMYpwI5p8/, didn't match any of these.
  </code></pre>
  
  <p>django generate this error..some one suggest !!</p>