diff --git a/STT.py b/STT.py
index f83cbd9..8524402 100644
--- a/STT.py
+++ b/STT.py
@@ -19,7 +19,7 @@ def read(self, file_name, language=__NOT_DEFINED):
 
         if not file_name:
             raise ValueError('Expected file name')
-        if not (".flac" in file_name):
+        if ".flac" not in file_name:
             raise ValueError('Expected .flac file')
 
         if language == self.__NOT_DEFINED:
diff --git a/TTS.py b/TTS.py
index ac3d700..7668561 100644
--- a/TTS.py
+++ b/TTS.py
@@ -25,10 +25,14 @@ def __try_detect_language(self, target_language):
             return self.__DEFAULT_VOICE
 
         all_voices = self.list_voices()
-        for voice in all_voices['voices']:
-            if target_language in voice['language']:
-                return voice['name']
-        return self.__DEFAULT_VOICE
+        return next(
+            (
+                voice['name']
+                for voice in all_voices['voices']
+                if target_language in voice['language']
+            ),
+            self.__DEFAULT_VOICE,
+        )
 
     def speech(self, text, file_name=__NOT_DEFINED,
                voice=__NOT_DEFINED, language=__NOT_DEFINED, play_after=True):
diff --git a/Translate.py b/Translate.py
index dc651c6..a89f625 100644
--- a/Translate.py
+++ b/Translate.py
@@ -21,10 +21,14 @@ def list_languages(self):
 
     def search_language_code(self, language_name):
         all_languages = self.list_languages()
-        for language in all_languages['languages']:
-            if language['language_name'].lower() == language_name.lower():
-                return language['language']
-        return None
+        return next(
+            (
+                language['language']
+                for language in all_languages['languages']
+                if language['language_name'].lower() == language_name.lower()
+            ),
+            None,
+        )
 
     def translate(self, text, source, target):
         self.__validate()