Fix formatting of lib/cache.py

lib/cache.py

@@ -21,15 +21,19 @@ CACHE = pylru.lrucache(CACHE_SIZE)
 # but in the file cache
 MIN_SIZE_FOR_FILECACHE = 80
 
+
 def _update_answer(answer):
     def _now_in_tz(timezone):
         return datetime.datetime.now(pytz.timezone(timezone)).strftime("%H:%M:%S%z")
 
     if isinstance(answer, str) and "%{{NOW(" in answer:
-        answer = re.sub(r"%{{NOW\(([^}]*)\)}}", lambda x: _now_in_tz(x.group(1)), answer)
+        answer = re.sub(
+            r"%{{NOW\(([^}]*)\)}}", lambda x: _now_in_tz(x.group(1)), answer
+        )
 
     return answer
 
+
 def get_signature(user_agent, query_string, client_ip_address, lang):
     """
     Get cache signature based on `user_agent`, `url_string`,
@@ -48,11 +52,11 @@ def get_signature(user_agent, query_string, client_ip_address, lang):
     if ":" in location:
         return None
 
-    signature = "%s:%s:%s:%s" % \
-        (user_agent, query_string, client_ip_address, lang)
+    signature = "%s:%s:%s:%s" % (user_agent, query_string, client_ip_address, lang)
     print(signature)
     return signature
 
+
 def get(signature):
     """
     If `update_answer` is not True, return answer as it is
@@ -77,9 +81,11 @@ def get(signature):
         return _update_answer(value)
     return None
 
+
 def _randint(minimum, maximum):
     return random.randrange(maximum - minimum)
 
+
 def store(signature, value):
     """
     Store in cache `value` for `signature`
@@ -95,15 +101,17 @@ def store(signature, value):
     value_record = {
         "val": value_to_store,
         "expiry": time.time() + _randint(1000, 2000),
-        }
+    }
 
     CACHE[signature] = value_record
 
     return _update_answer(value)
 
+
 def _hash(signature):
     return hashlib.md5(signature.encode("utf-8")).hexdigest()
 
+
 def _store_in_file(signature, value):
     """Store `value` for `signature` in cache file.
     Return file name (signature_hash) as the result.
@@ -128,6 +136,7 @@ def _store_in_file(signature, value):
         f_cache.write(value)
     return signature_hash
 
+
 def _read_from_file(signature, sighash=None):
     """Read value for `signature` from cache file,
     or return None if file is not found.