Update app.py

app.py

@@ -52,6 +52,8 @@ def detect_lang(
         tuple with the language code and probability of detection if
         return_proba is set to True.
     """
+    if len(text.split()) < 4:
+        return [("und", 1.0)] if return_proba else "und" 
     if langs:
         langs = set(langs)
     else:
@@ -73,7 +75,7 @@ def identify(text):
 
 iface = gr.Interface(
     title="NB Nordic Language Identification",
-    description="""This demo uses the [NB-Nordic-LID](https://huggingface.co/NbAiLab/nb-nordic-lid) model to classify a given text into one of the 12 Nordic languages supported.""",
+    description="""This demo uses the [NB-Nordic-LID](https://huggingface.co/NbAiLab/nb-nordic-lid) model to classify a given text into one of the 12 Nordic languages supported. <b>At least 3 or 4 words are needed to identify the language.</b>""",
     fn=identify,
     inputs="text", 
     outputs="label")