correct memory management of firmware, login and tools imports

i18n/i18n.py

@@ -220,7 +220,7 @@ def bake_translations():
     with open(filepath, "w", encoding="utf8", newline="\n") as translations:
         translations.write(file_header)
         translations.write("translation_index = ")
-        translations.write(repr(translation_index))
+        translations.write(repr(tuple(translation_index)))
         translations.write("\n\n")
         print("Baked", filepath)
 

src/boot.py

@@ -44,38 +44,41 @@ def draw_splash():
 
 def check_for_updates():
     """Checks SD card, if a valid firmware is found asks if user wants to update the device"""
-    from krux import firmware
+    import krux.firmware
 
-    if firmware.upgrade():
+    if krux.firmware.upgrade():
         power_manager.shutdown()
 
     # Unimport firware
-    sys.modules.pop("krux.firmware")
-    del sys.modules["krux"].firmware
-    del firmware
+    del krux.firmware
+    del sys.modules["krux.firmware"]
 
 
 def login(ctx_login):
     """Loads and run the Login page"""
-    from krux.pages.login import Login
+    import krux.pages.login
 
     login_start_from = None
     while True:
-        if not Login(ctx_login).run(login_start_from):
+        login = krux.pages.login.Login(ctx_login)
+        if not login.run(login_start_from):
             break
 
         if ctx_login.wallet is not None:
             # Have a loaded wallet
+            del login
             break
+
         # Login closed due to change of locale at Settings
         login_start_from = (
-            Login.SETTINGS_MENU_INDEX
+            krux.pages.login.Login.SETTINGS_MENU_INDEX
         )  # will start Login again from Settings index
+        del login
+
 
-    # Unimport Login the free memory
-    sys.modules.pop("krux.pages.login")
-    del sys.modules["krux"].pages.login
-    del Login
+    # Unimport login
+    del krux.pages.login
+    del sys.modules["krux.pages.login"]
 
 
 def home(ctx_home):

src/krux/pages/login.py

@@ -754,15 +754,17 @@ def load_key_from_tiny_seed_image(self, grid_type="Tiny Seed"):
 
     def tools(self):
         """Handler for the 'Tools' menu item"""
-        from .tools import Tools
+        import krux.pages.tools
 
+        tools = krux.pages.tools.Tools(self.ctx)
         while True:
-            if Tools(self.ctx).run() == MENU_EXIT:
+            if tools.run() == MENU_EXIT:
                 break
 
         # Unimport tools
-        sys.modules.pop("krux.pages.tools")
-        del sys.modules["krux.pages"].tools
+        del tools
+        del krux.pages.tools
+        del sys.modules["krux.pages.tools"]
 
         return MENU_CONTINUE
 

src/krux/translations.py

@@ -20,7 +20,7 @@
 # OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 # THE SOFTWARE.
 
-translation_index = [
+translation_index = (
     "de-DE",
     "es-MX",
     "fr-FR",
@@ -29,4 +29,4 @@
     "ru-RU",
     "tr-TR",
     "vi-VN",
-]
+)