title: Python logging: unicode symbols is unicode-escaped
body: <p>I want to log requests responses to file, but when i use <code>getLogger().warning(string)</code>, following string is being unicode-escaped
  Example:</p>
  
  <pre><code>r = requests.post(...)
  result = json.loads(r.text)  # Now result == '{"error": "Ошибка 1"}'
  getLogger().warning(json.dumps(result))
  </code></pre>
  
  <p>This code will write to log file unicode-escaped string, where "Ошибка" will be written like "\u0417\u0430\u043a\u0430\u0437..."
  But i want to see these characters as is.</p>