Update app.py

app.py

@@ -70,26 +70,24 @@ class Translators:
         url = os.environ['GCLIENT'] + f'sl={self.sl}&tl={self.tl}&q={self.input_text}'
         response = requests.get(url)
         return response.json()[0][0][0]
-
-    def download_argos_model(from_code, to_code):
+    
+    @classmethod
+    def download_argos_model(cls, from_code, to_code):
         import argostranslate.package
         print('Downloading model', from_code, to_code) 
         # Download and install Argos Translate package
         argostranslate.package.update_package_index()
         available_packages = argostranslate.package.get_available_packages()
         package_to_install = next(
-            filter(
-                lambda x: x.from_code == from_code and x.to_code == to_code, available_packages
-            )
+            filter(lambda x: x.from_code == from_code and x.to_code == to_code, available_packages)
         )
         argostranslate.package.install_from_path(package_to_install.download())
     
     def argos(self):
-        import argostranslate.translate, argostranslate.package       
-        # Translate
+        import argostranslate.translate, argostranslate.package
         try:
-            self.download_argos_model(self.sl, self.tl)
-            translated_text = argostranslate.translate.translate(self.input_text, self.sl, self.tl)
+            Translators.download_argos_model(self.sl, self.tl) # Download model
+            translated_text = argostranslate.translate.translate(self.input_text, self.sl, self.tl) # Translate
         except StopIteration:
             # packages_info = ', '.join(f"{pkg.get_description()}->{str(pkg.links)} {str(pkg.source_languages)}" for pkg in argostranslate.package.get_available_packages())
             packages_info = ', '.join(f"{pkg.from_name} ({pkg.from_code}) -> {pkg.to_name} ({pkg.to_code})" for pkg in argostranslate.package.get_available_packages())