[format.python] initial formatting of the python code

This patch was generated by black [1]::

    make format.python

[1] https://github.com/psf/black

Signed-off-by: Markus Heiser <markus.heiser@darmarit.de>

tests/__init__.py

@@ -50,5 +50,6 @@ class SearxTestCase(aiounittest.AsyncTestCase):
 
         def cleanup_patch():
             setattr(obj, attr, previous_value)
+
         self.addCleanup(cleanup_patch)
         setattr(obj, attr, value)