title	localeTitle
Builder	باني

البناء هو نمط تصميم يمكن أن يخلص ويقسم إنشاء كائن معقد جدا.

باني في بايثون

هنا مثال على تنفيذ Builder Pattern في Python3.

`# Builder class CourseBuilder(object): def init(self, teacher): self.teacher = teacher

def build_course(self): 
    self.teacher.provide_homework() 
    self.teacher.provide_exam() 
    return self.teacher.course

Teacher

class Teacher(object): def init(self, name=None): self.name = name self.course = Course()

def provide_homework(self): 
    raise NotImplementedError 

def provide_exam(self): 
    raise NotImplementedError

class MathTeacher(Teacher): def provide_homework(self): self.course.homework = 'This is Math homework provided by {}.'.format(self.name)

def provide_exam(self): 
    self.course.exam = 'This is Math exam tested by {}.'.format(self.name)

class HistoryTeacher(Teacher): def provide_homework(self): self.course.homework = 'This is History homework provided by {}.'.format(self.name)

def provide_exam(self): 
    self.course.exam = 'This is History exam tested by {}.'.format(self.name)

class Course(object): def init(self): self.homework = None self.exam = None

def __str__(self): 
    return 'Homework: {}\nExam: {}\n'.format(self.homework, self.exam)

math_course = CourseBuilder(MathTeacher('Harry')).build_course() print(math_course)

Homework: This is Math homework provided by Harry. Exam: This is Math exam tested by Harry.

history_course = CourseBuilder(HistoryTeacher('Potter')).build_course() print(history_course)

Homework: This is History homework provided by Potter. Exam: This is History exam tested by Potter. `