From 2c92d844b01458e74bd7163d755518f7947e87ec Mon Sep 17 00:00:00 2001
From: Crista Lopes <crista@tagide.com>
Date: Wed, 1 Jan 2014 17:42:19 -0800
Subject: [PATCH] Make the mvc example interactive

---
 31-trinity/tf-31.py | 39 ++++++++++++++++++++-------------------
 1 file changed, 20 insertions(+), 19 deletions(-)

diff --git a/31-trinity/tf-31.py b/31-trinity/tf-31.py
index d7de370..ae7bad8 100755
--- a/31-trinity/tf-31.py
+++ b/31-trinity/tf-31.py
@@ -1,23 +1,21 @@
 #!/usr/bin/env python
-
 import sys, re, operator, collections
 
-#
-# Model
-#
 class WordFrequenciesModel:
     """ Models the data. In this case, we're only interested 
     in words and their frequencies as an end result """
     freqs = {}
     def __init__(self, path_to_file):
-        stopwords = set(open('../stop_words.txt').read().split(','))
-        words = re.findall('[a-z]{2,}', open(path_to_file).read().lower())
-        self.freqs = collections.Counter(w for w in words if w not in stopwords)
+        self.update(path_to_file)
 
-
-#
-# View
-#
+    def update(self, path_to_file):
+        try:
+            stopwords = set(open('../stop_words.txt').read().split(','))
+            words = re.findall('[a-z]{2,}', open(path_to_file).read().lower())
+            self.freqs = collections.Counter(w for w in words if w not in stopwords)
+        except IOError:
+            print "File not found"
+            self.freqs = {}
 class WordFrequenciesView:
     def __init__(self, model):
         self._model = model
@@ -27,18 +25,21 @@ class WordFrequenciesView:
         for (w, c) in sorted_freqs[:25]:
             print w, '-', c
 
-#
-# Controller
-#
 class WordFrequencyController:
     def __init__(self, model, view):
-        self._model = model
-        self._view = view
+        self._model, self._view = model, view
         view.render()
 
-#
-# Main
-#
+    def run(self):
+        while True:
+            print "Next file: " 
+            sys.stdout.flush() 
+            filename = sys.stdin.readline().strip()
+            self._model.update(filename)
+            self._view.render()
+
+
 m = WordFrequenciesModel(sys.argv[1])
 v = WordFrequenciesView(m)
 c = WordFrequencyController(m, v)
+c.run()