[pylint] searx/network/__init__.py & add global (THREADLOCAL)

No functional change!

- fix messages from pylint
- add ``global THREADLOCAL``
- normalized various indentation

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

searx/network/__init__.py

@@ -1,4 +1,6 @@
 # SPDX-License-Identifier: AGPL-3.0-or-later
+# lint: pylint
+# pylint: disable=missing-module-docstring, missing-function-docstring, global-statement
 
 import asyncio
 import threading
@@ -31,29 +33,33 @@ except ImportError:
             self._count.release()
 
         def get(self):
-            if not self._count.acquire(True):
+            if not self._count.acquire(True):  #pylint: disable=consider-using-with
                 raise Empty
             return self._queue.popleft()
 
 
 THREADLOCAL = threading.local()
-
+"""Thread-local data is data for thread specific values."""
 
 def reset_time_for_thread():
+    global THREADLOCAL
     THREADLOCAL.total_time = 0
 
 
 def get_time_for_thread():
     """returns thread's total time or None"""
+    global THREADLOCAL
     return THREADLOCAL.__dict__.get('total_time')
 
 
 def set_timeout_for_thread(timeout, start_time=None):
+    global THREADLOCAL
     THREADLOCAL.timeout = timeout
     THREADLOCAL.start_time = start_time
 
 
 def set_context_network_name(network_name):
+    global THREADLOCAL
     THREADLOCAL.network = get_network(network_name)
 
 
@@ -62,11 +68,13 @@ def get_context_network():
 
     If unset, return value from :py:obj:`get_network`.
     """
+    global THREADLOCAL
     return THREADLOCAL.__dict__.get('network') or get_network()
 
 
 def request(method, url, **kwargs):
     """same as requests/requests/api.py request(...)"""
+    global THREADLOCAL
     time_before_request = default_timer()
 
     # timeout (httpx)
@@ -153,18 +161,17 @@ def patch(url, data=None, **kwargs):
 def delete(url, **kwargs):
     return request('delete', url, **kwargs)
 
-
-async def stream_chunk_to_queue(network, q, method, url, **kwargs):
+async def stream_chunk_to_queue(network, queue, method, url, **kwargs):
     try:
         async with network.stream(method, url, **kwargs) as response:
-            q.put(response)
+            queue.put(response)
             async for chunk in response.aiter_bytes(65536):
                 if len(chunk) > 0:
-                    q.put(chunk)
+                    queue.put(chunk)
     except (httpx.HTTPError, OSError, h2.exceptions.ProtocolError) as e:
-        q.put(e)
+        queue.put(e)
     finally:
-        q.put(None)
+        queue.put(None)
 
 
 def stream(method, url, **kwargs):
@@ -179,13 +186,15 @@ def stream(method, url, **kwargs):
     httpx.Client.stream requires to write the httpx.HTTPTransport version of the
     the httpx.AsyncHTTPTransport declared above.
     """
-    q = SimpleQueue()
-    future = asyncio.run_coroutine_threadsafe(stream_chunk_to_queue(get_network(), q, method, url, **kwargs),
-                                              get_loop())
-    chunk_or_exception = q.get()
+    queue = SimpleQueue()
+    future = asyncio.run_coroutine_threadsafe(
+        stream_chunk_to_queue(get_network(), queue, method, url, **kwargs),
+        get_loop()
+    )
+    chunk_or_exception = queue.get()
     while chunk_or_exception is not None:
         if isinstance(chunk_or_exception, Exception):
             raise chunk_or_exception
         yield chunk_or_exception
-        chunk_or_exception = q.get()
+        chunk_or_exception = queue.get()
     return future.result()