marcusberr
diff --git a/‎input_output.ipynb
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+3-3Lines changed: 3 additions & 3 deletions b/‎input_output.ipynb
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+3-3Lines changed: 3 additions & 3 deletions
diff --git a/‎tutorial/tests/data/english.csv renamed to ‎tutorial/tests/data/english.txt
Copy file name to clipboard b/‎tutorial/tests/data/english.csv renamed to ‎tutorial/tests/data/english.txt
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diff --git a/‎tutorial/tests/test_input_output.py
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+7-7Lines changed: 7 additions & 7 deletions b/‎tutorial/tests/test_input_output.py
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+7-7Lines changed: 7 additions & 7 deletions
@@ -1216,9 +1216,9 @@
     "tags": []
    },
    "source": [
-    "Write a function which takes the words from the `english.csv` and translates them to italian using the dictionary file `dict.csv`. The output should be a **list of tuples** with the pair `italian, english` if the word is found and nothing otherwise.\n",
+    "Write a function which takes the words from the file `english.txt` and translates them to Italian using the dictionary file `dict.csv`. The output should be a **list of tuples** with the pair `italian, english` if the word is found and nothing otherwise.\n",
     "\n",
-    "For example, given the `english.csv` file:\n",
+    "For example, given the `english.txt` file:\n",
     "\n",
     "```\n",
     "bread\n",
@@ -1244,7 +1244,7 @@
     "            Try to avoid loading the dictionary more than once. <b>\"Dictionary file\"</b> should suggest you the correct Python data structure to use to store the translations.\n",
     "        </li>\n",
     "        <li>\n",
-    "            The path to the input file <code>english.csv</code> is available as the argument <code>english</code> of the function <code>solution_exercise4</code>, the file <code>dict.csv</code> as the argument <code>dictionary</code>.\n",
+    "            The path to the input file <code>english.txt</code> is available as the argument <code>english</code> of the function <code>solution_exercise4</code>, the file <code>dict.csv</code> as the argument <code>dictionary</code>.\n",
     "        </li>\n",
     "    </ul>\n",
     "<div>\n"
 
@@ -139,20 +139,20 @@ def test_exercise3(function_to_test):
 def reference_solution_exercise4(
     english: pl.Path, dictionary: pl.Path
 ) -> list[tuple[str, str]]:
-    with english.open("r") as english_file:
-        english_reader = csv.reader(english_file)
-        english_words = [w for w, _ in english_reader]
+    english_words = english.read_text().splitlines()
 
     with dictionary.open("r") as dict_file:
         dict_reader = csv.reader(dict_file)
-        next(dict_reader)
-        translations = {en: it for _, it, en, _ in dict_reader}
+        next(dict_reader)  # skip header
+        translations = {en: it for _, it, en in dict_reader}
 
-    return [(e, translations[e]) for e in english_words if e in translations.keys()]
+    return [
+        (word, translations[word]) for word in english_words if word in translations
+    ]
 
 
 def test_exercise4(function_to_test):
-    words = get_data("english.csv")
+    words = get_data("english.txt")
     dictionary = get_data("dict.csv")
     assert function_to_test(words, dictionary) == reference_solution_exercise4(
         words, dictionary