读取图书信息和读者信息，批量生成图书借阅记录并导随机时间借阅记录代码

要生成随机时间的图书借阅记录，可以使用`random`模块来生成随机日期和时间。以下是一个示例代码：

import csv
from datetime import datetime, timedelta
import random

def generate_random_datetime(start_date, end_date):
    # 生成指定范围内的随机日期和时间
    start_timestamp = start_date.timestamp()
    end_timestamp = end_date.timestamp()
    random_timestamp = random.uniform(start_timestamp, end_timestamp)
    random_datetime = datetime.fromtimestamp(random_timestamp)
    return random_datetime

def generate_borrow_records(books_file, readers_file, borrow_records_file, start_date, end_date):
    # 读取图书信息
    books = []
    with open(books_file, 'r') as file:
        reader = csv.DictReader(file)
        books = list(reader)

    # 读取读者信息
    readers = []
    with open(readers_file, 'r') as file:
        reader = csv.DictReader(file)
        readers = list(reader)

    # 生成借阅记录
    borrow_records = []
    for book in books:
        for reader in readers:
            borrow_date = generate_random_datetime(start_date, end_date)
            return_date = borrow_date + timedelta(days=random.randint(7, 30))
            borrow_record = {
                'Book ID': book['ID'],
                'Book Name': book['Name'],
                'Reader ID': reader['ID'],
                'Reader Name': reader['Name'],
                'Borrow Date': borrow_date.strftime('%Y-%m-%d %H:%M:%S'),
                'Return Date': return_date.strftime('%Y-%m-%d %H:%M:%S')
            }
            borrow_records.append(borrow_record)

    # 导出借阅记录
    fieldnames = ['Book ID', 'Book Name', 'Reader ID', 'Reader Name', 'Borrow Date', 'Return Date']
    with open(borrow_records_file, 'w', newline='') as file:
        writer = csv.DictWriter(file, fieldnames=fieldnames)
        writer.writeheader()
        writer.writerows(borrow_records)

# 示例用法
start_date = datetime(2022, 1, 1)
end_date = datetime(2022, 12, 31)
generate_borrow_records('books.csv', 'readers.csv', 'borrow_records.csv', start_date, end_date)

上述代码中，`generate_random_datetime`函数用于生成指定范围内的随机日期和时间。在`generate_borrow_records`函数中，我们使用该函数来生成随机的借阅日期和还书日期。借阅日期随机生成，还书日期在借阅日期基础上随机增加7到30天。最后，将借阅记录导出到CSV文件中。

请注意，上述代码中的日期范围和文件路径需要根据实际情况进行调整。另外，如果需要更复杂的日期和时间生成，您可能需要使用更高级的日期和时间库，如`arrow`或`dateutil`。