📅  最后修改于: 2023-12-03 14:49:55.212000             🧑  作者: Mango
该书店管理系统使用文件处理技术,能够对书店的库存、销售情况进行管理和统计,同时可以进行书籍的添加、修改、删除等操作。
本书店管理系统使用Python语言编写,利用文件处理技术进行数据的存储和读取。具体实现方法如下:
以下是本书店管理系统的关键代码片段:
# 读取数据文件
def load_books(filename):
books = []
with open(filename, 'r') as f:
reader = csv.reader(f)
for row in reader:
books.append(row)
return books
# 查询书籍
def search_books(books, keyword):
results = []
for book in books:
if keyword in book[0] or keyword in book[1]:
results.append(book)
return results
# 添加书籍
def add_book(books, book):
books.append(book)
with open(DATA_FILE, 'a') as f:
writer = csv.writer(f)
writer.writerow(book)
# 修改书籍
def modify_book(books, index, book):
books[index] = book
with open(DATA_FILE, 'w') as f:
writer = csv.writer(f)
writer.writerows(books)
# 删除书籍
def delete_book(books, index):
del books[index]
with open(DATA_FILE, 'w') as f:
writer = csv.writer(f)
writer.writerows(books)
# 统计销售情况
def sales_report(filename):
sales = {}
with open(filename, 'r') as f:
reader = csv.reader(f)
for row in reader:
book = row[0]
if book in sales:
sales[book]['count'] += 1
sales[book]['revenue'] += float(row[1])
else:
sales[book] = {'count': 1, 'revenue': float(row[1])}
return sales
本书店管理系统使用文件处理技术实现对书店的管理和统计,功能完善,易于使用。通过学习该系统的源代码,可以学习到Python编程语言中文件读写、函数定义等基本概念和技巧。