Update app.py

app.py

@@ -104,7 +104,19 @@ def nllb(model_name, sl, tl, input_text):
     return translated_text[0]['translation_text']
 
 @spaces.GPU
-def translate_text(input_text, sselected_language, tselected_language, model_name):
+def translate_text(input_text: str, sselected_language: str, tselected_language: str, model_name: str) -> str:
+    """
+    Translates the input text from the source language to the target language.
+
+    Args:
+        input_text (str): The source text to be translated
+        sselected_language (str): The source language of the input text
+        tselected_language (str): The target language in which the input text is translated
+        model (str): The selected translation model
+
+    Returns:
+        str: The input text translated to the selected target language
+    """
     sl = all_langs[sselected_language]
     tl = all_langs[tselected_language]
     message_text = f'Translated from {sselected_language} to {tselected_language} with {model_name}'