sffgs

test33.py

+class Book:
+    def __init__(self, book_id, title, author):
+        self.book_id = book_id
+        self.title = title
+        self.author = author
+
+    def __str__(self):
+        return f"{self.title} - {self.author}"
+    
+
+class Library:
+    def __init__(self, library_id, title):
+        self.library_id = library_id
+        self.title = title
+        self.books = {} 
+
+    def add_book(self, book, count):
+        if book.book_id in self.books:
+            self.books[book.book_id]["count"] += count
+        else:
+            self.books[book.book_id] = {
+                "book": book,
+                "count": count
+            }
+    def __str__(self):
+        return self.title
+    
+
+
+
+class Student:
+    def __init__(self, student_id, full_name):
+        self.student_id = student_id
+        self.full_name = full_name
+
+    def __str__(self):
+        return self.full_name
+
+
+# ...
+
+class Borrow:
+    def __init__(self, student, book, library):
+        self.student = student
+        self.book = book
+        self.library = library
+
+    def info(self):
+        return f"{self.student} کتاب «{self.book}» را از کتابخانه {self.library} گرفته است"
+
+
+book1 = Book(1, "رازآلوده", "نویسنده حسین")
+book2 = Book(2, "test", "author test")
+
+
+library1 = Library(1, "تاریخی")
+library2 = Library(2, "ورزشی")
+
+library1.add_book(book1, 3)
+library2.add_book(book2, 1)
+
+
+student1 = Student(1, "Ali")
+
+
+borrow1 = Borrow(student1, book1, library1)
+
+print(borrow1.info())
+