Update app.py

app.py

@@ -8,6 +8,83 @@ import nltk
 
 nltk.download('punkt')
 
+
+
+
+
+
+def nextwords_1(ww, inx):
+    try:
+        return '' if inx == len(ww) - 1 else ww[inx + 1]
+    except:
+        pass
+    
+    return ''
+
+def nextwords_2(ww, inx):
+    try:
+        return '' if inx == len(ww) - 2 else ww[inx + 2]
+    except:
+        pass
+    
+    return ''
+            
+    
+        
+def nextwords_3(ww, inx):
+    try:
+        return '' if inx == len(ww) - 3 else ww[inx + 3]
+    except:
+        pass
+    
+    return ''
+            
+def nextwords_4(ww, inx):
+    try:
+        return '' if inx == len(ww) - 4 else ww[inx + 4]
+    except:
+        pass
+    
+    return ''
+                
+     
+def prvwords_1(ww, inx):
+    try:
+        return '' if inx == 0 else ww[inx - 1]
+    except:
+        pass
+    
+    return ''
+            
+    
+def prvwords_2(ww, inx):
+    try:
+        return '' if inx == 0 else ww[inx - 2]
+    except:
+        pass
+    
+    return ''
+            
+def prvwords_3(ww, inx):
+    try:
+        return '' if inx == 0 else ww[inx - 3]
+    except:
+        pass
+    
+    return ''
+            
+     
+def prvwords_4(ww, inx):
+    try:
+        return '' if inx == 0 else ww[inx - 4]
+    except:
+        pass
+    
+    return ''
+            
+
+
+    
 # Define feature functions
 def features(sentence, index):
     return {