과제3, 과제4 코드리뷰 부탁드립니다

광일공방 중고나라 #3 재업로드.py

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+import datetime
+import csv
+import os
+
+class Board():
+    def __init__(self):
+        self.posts = []
+        self.actions = [self.add_post, self.update_post, self.delete_post, self.go_to_previous_page, self.go_to_next_page]
+        self.page_index = 1
+        self.posts_per_page = 15
+
+
+    @staticmethod 
+    def print_actions(): 
+        print('---------------------------------------')
+        print('1. 작성하기')
+        print('2. 수정하기')
+        print('3. 삭제하기')
+        # print('4. 저장하기')
+        print('4. 이전 페이지로')
+        print('5. 다음 페이지로')
+        print('---------------------------------------')
+
+    def print_post_list(self):
+        if self.posts == []:
+            print("작성된 판매게시글이 없습니다.")
+            print("회원님이 한 번 작성해보시는 것이 어떨까요?")
+            return
+
+        self.posts.sort(reverse=True)
+
+        paged_posts = self.posts[self.posts_per_page*(self.page_index-1):self.posts_per_page*self.page_index]
+
+        for post in paged_posts: # [FIX] 포맷 한글일 때 padding 제대로 출력안됨. 들쑥날쑥
+            print('{:^8} | {:<60} | {}'.format(post.post_no, post.post_title, post.post_inserted_time))
+
+        page_length = self.get_page_length()
+        print('Page: {}'.format(str(self.page_index) + '/' + str(page_length)))
+
+    def get_user_action(self):
+        try:
+            user_action_no = int(input('> '))
+        except:
+            print('잘못된 입력입니다.')
+            input()    
+            return  
+        if user_action_no >0 and user_action_no <= len(self.actions):
+            self.actions[user_action_no - 1]()
+            return  
+        print('잘못된 입력입니다.')
+
+    def save_posts_decorator(func):
+        def wrapper(self):
+            func(self)
+            with open ('중고나라 데이터.csv', 'w', encoding='utf8', newline='') as save_data:
+                posts_write = csv.writer(save_data)
+                # posts_write.writerows(self.posts)
+                # [FIx] 코드가 너무 깊으면 나중에 Post를 Iterable한 클래스로 만들어서 writerows 메서드를 쓰자
+                for post in self.posts:
+                    posts_write.writerow([post.post_no, post.post_title, post.post_inserted_time])
+
+                input('저장이 완료되었습니다')
+        return wrapper
+
+    @save_posts_decorator
+    def add_post(self):
+        if self.posts == []:
+            post_no = 1
+        if self.posts != []:
+            post_no = self.posts[0].post_no + 1
+
+        post_title = input('내용> ')
+
+        post_inserted_time = datetime.datetime.now().strftime('%Y-%m-%d %H:%M:%S')
+        self.posts.append(Post(post_no, post_title, post_inserted_time))
+
+    @save_posts_decorator
+    def update_post(self):
+        try:
+            target_post_no = int(input('몇 번 글을 수정할까요? '))
+        except:
+            input('잘못된 입력입니다')
+            return
+
+        try:
+            target_post_index = [index for index, post in enumerate(self.posts) if post.post_no == target_post_no][0]
+        except:
+            input('잘못된 입력입니다')
+            return
+        self.posts[target_post_index].post_title = input('수정할 내용을 입력해주세요 >')
+        print(str(target_post_no) +'번 글이 수정되었습니다')
+
+    @save_posts_decorator
+    def delete_post(self):
+        try:
+            target_post_no = int(input('몇 번 글을 삭제할까요? '))
+        except:
+            input('잘못된 입력입니다')
+            return     
+        try:
+            target_post_index = [index for index, post in enumerate(self.posts) if post.post_no == target_post_no][0]
+        except:
+            input('잘못된 입력입니다')
+            return
+        del(self.posts[target_post_index])
+        print(str(target_post_no) +'번 글이 삭제되었습니다')
+
+    # def save_posts(self):
+    #     with open ('중고나라 데이터.csv', 'w', encoding='utf8', newline='') as save_data:
+    #         posts_write = csv.writer(save_data)
+    #         posts_write.writerows(self.posts)
+    #     input('저장이 완료되었습니다')
+
+    def load_posts(self):
+        with open ('중고나라 데이터.csv', 'r', encoding='utf8') as load_data:
+            posts_read = csv.reader(load_data)
+            posts_read = [Post(int(post[0]), post[1], post[2]) for post in posts_read]
+            self.posts = list(posts_read)
+
+    def go_to_next_page(self):
+        page_length = self.get_page_length()
+        page_index_to_go = self.page_index + 1
+        if page_index_to_go > page_length:
+            input("가장 끝 페이지입니다.")
+            return
+        self.page_index = page_index_to_go
+
+    def go_to_previous_page(self):
+        page_index_to_go = self.page_index - 1
+        if page_index_to_go < 1:
+            input("가장 앞 페이지입니다.")
+            return
+        self.page_index = page_index_to_go
+
+    def get_page_length(self):
+        return len(self.posts)//(self.posts_per_page) + 1
+
+
+# Post Class만들기
+class Post:
+    def __init__(self, post_no, post_title, post_inserted_time):
+        self.post_no = post_no
+        self.post_title = post_title
+        self.post_inserted_time = post_inserted_time
+
+    def __lt__(self, other): # 별도 모듈 없이 클래스 정렬을 위함
+        return self.post_no < other.post_no
+
+
+
+
+
+
+def clear_screen():
+    os.system('cls' if os.name == 'nt' else 'clear')
+
+if __name__ == "__main__":
+    print("본 프로그램은 광일공방에서 중고거래 사이트를 기웃거리던 광일이가 \n...\n중략\n...\n아나바다 철학이 담긴 프로그램을 밤을 지새우며 코드를 작성합니다.")
+    input("프로그램을 시작하시려면 엔터키를 입력하세요...")
+    board = Board()
+    try:
+        board.load_posts()
+    except:
+        input("파일을 불러오지 못했습니다.")
+
+    while True:
+        clear_screen()
+        board.print_post_list()
+        board.print_actions()
+        board.get_user_action()
+

광일공방 중고나라 과제#4/__init__.py

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+import os
+from board import Board  
+from post import Post
+from user_management import User_management
+
+def clear_screen():
+    os.system('cls' if os.name == 'nt' else 'clear')
+
+if __name__ == "__main__":
+    print("본 프로그램은 광일공방에서 중고거래 사이트를 기웃거리던 광일이가 \n...\n중략\n...\n아나바다 철학이 담긴 프로그램을 밤을 지새우며 코드를 작성합니다.")
+    input("프로그램을 시작하시려면 로그인하세요")
+    user_management = User_management()
+    try:
+        user_management.load_users()
+    except:
+        pass
+    signed_in_user_id = None    
+    while signed_in_user_id == None:
+        user_management.print_actions()
+        signed_in_user_id = user_management.get_user_action()
+
+
+    board = Board(signed_in_user_id)
+    try:
+        board.load_posts()
+    except:
+        input("파일을 불러오지 못했습니다.")
+
+    while True:
+        clear_screen()
+        board.print_post_list()
+        board.print_actions()
+        board.get_user_action()

광일공방 중고나라 과제#4/board.py

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+import datetime
+import csv
+from post import Post
+
+POST_DATA_PATH = 'second-hand_shop_post_data.csv'
+
+class Board():
+    def __init__(self, signed_in_user_id):
+        self.signed_in_user_id = signed_in_user_id
+        self.posts = []
+        self.actions = [self.add_post, self.update_post, self.delete_post, self.go_to_previous_page, self.go_to_next_page]
+        self.page_index = 1
+        self.posts_per_page = 15
+
+
+    @staticmethod 
+    def print_actions(): 
+        print('---------------------------------------')
+        print('1. 작성하기')
+        print('2. 수정하기')
+        print('3. 삭제하기')
+        # print('4. 저장하기')
+        print('4. 이전 페이지로')
+        print('5. 다음 페이지로')
+        print('---------------------------------------')
+
+    def print_post_list(self):
+        if self.posts == []:
+            print("작성된 판매게시글이 없습니다.")
+            print("회원님이 한 번 작성해보시는 것이 어떨까요?")
+            return
+
+        not_deleted_posts = (post for post in self.posts if post.post_deleted == 'N')
+        self.posts = list(not_deleted_posts)
+        self.posts.sort(reverse=True)
+        paged_posts = self.posts[self.posts_per_page*(self.page_index-1):self.posts_per_page*self.page_index]
+        for post in paged_posts: # [FIX] 포맷 한글일 때 padding 제대로 출력안됨. 들쑥날쑥
+            print('{:^8} | {:<60} | {:^6} | {}'.format(post.post_no, post.post_title, post.post_register, post.post_inserted_time))
+
+        page_length = self.get_page_length()
+        print('Page: {}'.format(str(self.page_index) + '/' + str(page_length)))
+
+    def get_user_action(self):
+        try:
+            user_action_no = int(input('> '))
+        except:
+            print('잘못된 입력입니다.')
+            input()    
+            return  
+        if user_action_no >0 and user_action_no <= len(self.actions):
+            self.actions[user_action_no - 1]()
+            return  
+        print('잘못된 입력입니다.')
+
+    def save_posts(func):
+        def wrapper(self):
+            func(self)
+            save_data = open ('중고나라 데이터.csv', 'w', encoding='utf8', newline='')
+            posts_write = csv.writer(save_data)
+            for post in self.posts:
+                posts_write.writerow(post.save_to_file())
+            save_data.close()
+            #input('저장이 완료되었습니다')
+        return wrapper
+
+    @save_posts
+    def add_post(self):
+        # if self.posts == []:
+        #     post_no = 1
+        # if self.posts != []:
+        #     post_no = self.posts[0].post_no + 1
+        post_title = input('내용> ')
+        #post_inserted_time = datetime.datetime.now().strftime('%Y-%m-%d %H:%M:%S')
+        self.posts.append(Post(post_title, self.signed_in_user_id))
+
+    @save_posts
+    def update_post(self):
+        targets = self.get_target_post_no('삭제')
+        if targets == None: # 입력값 검증 에러 처리 
+            return
+        target_post_no, target_post_index = targets
+        if self.posts[target_post_index].check_authority(self.signed_in_user_id) == False:
+            input('{} 님은 해당 글에 대한 권한이 없습니다'.format(self.signed_in_user_id))
+            return
+        updated_post_title = input('수정할 내용을 입력해주세요 >')
+        self.posts[target_post_index].update_post_title(updated_post_title) 
+        print(str(target_post_no) +'번 글이 수정되었습니다')
+
+    @save_posts
+    def delete_post(self):
+        targets = self.get_target_post_no('삭제')
+        if targets == None: # 입력값 검증 에러 처리 
+            return
+        target_post_no, target_post_index = targets
+        if self.posts[target_post_index].check_authority(self.signed_in_user_id) == False:
+            input('{} 님은 해당 글에 대한 권한이 없습니다'.format(self.signed_in_user_id))
+            return
+        self.posts[target_post_index].logical_delete()    
+        # del(self.posts[target_post_index])
+        print(str(target_post_no) +'번 글이 삭제되었습니다')
+
+    def get_target_post_no(self, action):
+        try:
+            target_post_no = int(input('몇 번 글을 {}할까요? '.format(action)))
+        except:
+            input('잘못된 입력입니다')
+            return     
+        try:
+            target_post_index = [index for index, post in enumerate(self.posts) if post.post_no == target_post_no][0] #?
+            return [target_post_no,target_post_index]
+        except:
+            input('잘못된 입력입니다')
+            return
+
+    def load_posts(self):
+        with open (POST_DATA_PATH, 'r', encoding='utf8') as load_data:
+            posts_read = csv.reader(load_data)
+            #print(posts_read)
+            posts_read = [Post.load_from_file(*post) for post in posts_read]
+            self.posts = list(posts_read)
+
+    def go_to_next_page(self):
+        page_length = self.get_page_length()
+        page_index_to_go = self.page_index + 1
+        if page_index_to_go > page_length:
+            input("가장 끝 페이지입니다.")
+            return
+        self.page_index = page_index_to_go
+
+    def go_to_previous_page(self):
+        page_index_to_go = self.page_index - 1
+        if page_index_to_go < 1:
+            input("가장 앞 페이지입니다.")
+            return
+        self.page_index = page_index_to_go
+
+    def get_page_length(self):
+        return len(self.posts)//(self.posts_per_page) + 1

광일공방 중고나라 과제#4/post.py

@@ -0,0 +1,47 @@
+import datetime
+
+# Post Class만들기
+class Post:
+    max_post_no = 0
+
+    def __init__(self, post_title, post_register, post_no=None, post_deleted=None ,post_inserted_time=None):
+        self.post_title = post_title
+        self.post_register = post_register
+        print(Post.max_post_no)
+        if post_no != None and int(post_no) > Post.max_post_no:
+            Post.max_post_no = int(post_no)
+        if post_no == None:
+            post_no = Post.max_post_no + 1
+            Post.max_post_no = post_no
+        self.post_no = int(post_no)
+        # self.post_no = post_no if post_deleted is not None else 
+        if post_deleted is None:
+            post_deleted = 'N'
+        self.post_deleted = post_deleted
+        if post_inserted_time is None:
+            post_inserted_time = datetime.datetime.now().strftime('%Y-%m-%d %H:%M:%S')
+        self.post_inserted_time = post_inserted_time
+
+    def __lt__(self, other): # 별도 모듈 없이 클래스 정렬을 위함
+        return self.post_no < other.post_no
+
+    def save_to_file(self):
+        return [self.post_title, self.post_register, self.post_no, self.post_deleted, self.post_inserted_time]
+
+    @staticmethod
+    def load_from_file(file_post_title, file_post_register, file_post_no, file_post_deleted, file_post_inserted_time):
+        new_post = Post(file_post_title, file_post_register, file_post_no, file_post_deleted, file_post_inserted_time)
+        return new_post
+
+    def logical_delete(self):
+        self.post_deleted = 'Y'
+
+    def update_post_title(self, updated_post_title):
+        self.post_title = updated_post_title
+
+    def check_authority(self, signed_in_user_id):
+        if self.post_register == signed_in_user_id:
+            return True
+        if self.post_register != signed_in_user_id:
+            return False
+