[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>

searx/shared/__init__.py

@@ -9,6 +9,7 @@ try:
 except:
     # no uwsgi
     from .shared_simple import SimpleSharedDict as SharedDict, schedule
+
     logger.info('Use shared_simple implementation')
 else:
     try:
@@ -17,15 +18,19 @@ else:
             raise Exception()
     except:
         # uwsgi.ini configuration problem: disable all scheduling
-        logger.error('uwsgi.ini configuration error, add this line to your uwsgi.ini\n'
-                     'cache2 = name=searxcache,items=2000,blocks=2000,blocksize=4096,bitmap=1')
+        logger.error(
+            'uwsgi.ini configuration error, add this line to your uwsgi.ini\n'
+            'cache2 = name=searxcache,items=2000,blocks=2000,blocksize=4096,bitmap=1'
+        )
         from .shared_simple import SimpleSharedDict as SharedDict
 
         def schedule(delay, func, *args):
             return False
+
     else:
         # uwsgi
         from .shared_uwsgi import UwsgiCacheSharedDict as SharedDict, schedule
+
         logger.info('Use shared_uwsgi implementation')
 
 storage = SharedDict()

searx/shared/shared_abstract.py

@@ -3,7 +3,6 @@ from abc import ABC, abstractmethod
 
 
 class SharedDict(ABC):
-
     @abstractmethod
     def get_int(self, key):
         pass

searx/shared/shared_simple.py

@@ -7,7 +7,7 @@ from . import shared_abstract
 
 class SimpleSharedDict(shared_abstract.SharedDict):
 
-    __slots__ = 'd',
+    __slots__ = ('d',)
 
     def __init__(self):
         self.d = {}

searx/shared/shared_uwsgi.py

@@ -9,7 +9,6 @@ _last_signal = 10
 
 
 class UwsgiCacheSharedDict(shared_abstract.SharedDict):
-
     def get_int(self, key):
         value = uwsgi.cache_get(key)
         if value is None: