use with to simplify the code

constructor_example.json

@@ -2,7 +2,7 @@
     "books": [
         {
             "name": "1984",
-            "author": "George Orwell"
+            "author": "George Orwell",
             "description": "1984 est un roman dystopique de l'écrivain britannique George Orwell. Publié le 8 juin 1949 par Secker & Warburg, il s'agit du neuvième et dernier livre d'Orwell achevé de son vivant",
             "image": "1984.jpg",
             "review": "ct pas mal",

main.py

@@ -4,12 +4,11 @@ from Book import Book
 
 
 # Opening JSON file
-f = open('constructor.json', encoding='utf-8')
-data = json.load(f)
-f.close()
-f = open("style.css")
-style = f.read()
-f.close()
+with open('constructor.json', encoding='utf-8') as f:
+    data = json.load(f)
+
+with open('style.css', encoding='utf-8') as f:
+    style = f.read()
 
 books = data['books']
 html = ""
@@ -18,13 +17,11 @@ for book_data in books:
     book = Book(book_data["name"], book_data["author"], book_data["description"], book_data["image"], book_data["review"], book_data["release_date"], book_data["reading_date"])
     html += book.to_html()
 
-f = open("cast.html")
-text = f.read().replace("{{books}}", html).replace("{{style}}", style)
-f.close()
+with open('cast.html', encoding='utf-8') as f:
+    text = f.read().replace("{{books}}", html).replace("{{style}}", style)
 
 if len(sys.argv) > 1:
-    f = open(sys.argv[1], "w", encoding='utf-8')
+    with open(sys.argv[1], "w", encoding='utf-8') as f:
         f.write(text)
-    f.close()
 else:
     print(text)