Update app.py

app.py

@@ -15,9 +15,9 @@ def preprocess_text(text):
     text = text.lower()
     text = re.sub('[^A-Za-z0-9]+', ' ', text)
     return text
-
+    
 def get_most_frequent_words(text, n):
-    words = text.split()
+    words = re.findall(r'\b\w{4,}\b', text)
     word_count = Counter(words)
     most_common_words = word_count.most_common(n)
     return most_common_words