Python生成20个随机的ObjectId()的实用技巧

在Python中，可以使用bson库中的ObjectId类来生成20个随机的ObjectId。下面是一些实用技巧和使用例子：

1. 导入bson库和ObjectId类：

from bson import ObjectId

2. 使用列表生成式生成20个随机的ObjectId：

random_object_ids = [str(ObjectId()) for _ in range(20)]
print(random_object_ids)

输出：

['5c0b5dd65e67a781f8dfc7db', '5c0b5dd65e67a781f8dfc7dc', '5c0b5dd65e67a781f8dfc7dd', '5c0b5dd65e67a781f8dfc7de', '5c0b5dd65e67a781f8dfc7df', '5c0b5dd65e67a781f8dfc7e0', '5c0b5dd65e67a781f8dfc7e1', '5c0b5dd65e67a781f8dfc7e2', '5c0b5dd65e67a781f8dfc7e3', '5c...]

3. 生成指定数量的随机ObjectId：

def generate_random_object_ids(num):
    return [str(ObjectId()) for _ in range(num)]

random_object_ids = generate_random_object_ids(20)
print(random_object_ids)

输出：

['5c0b5e005e67a781f8dfc7e5', '5c0b5e005e67a781f8dfc7e6', '5c0b5e005e67a781f8dfc7e7', '5c0b5e005e67a781f8dfc7e8', '5c0b5e005e67a781f8dfc7e9', '5c0b5e005e67a781f8dfc7ea', '5c0b5e005e67a781f8dfc7eb', '5c0b5e005e67a781f8dfc7ec', '5c0b5e005e67a781f8dfc7ed', '5c...]

4. 生成指定前缀的随机ObjectId：

def generate_random_object_ids_with_prefix(prefix, num):
    return [prefix + str(ObjectId()) for _ in range(num)]

random_object_ids = generate_random_object_ids_with_prefix("USER_", 20)
print(random_object_ids)

输出：

['USER_5c0b5e175e67a781f8dfc7f0', 'USER_5c0b5e175e67a781f8dfc7f1', 'USER_5c0b5e175e67a781f8dfc7f2', 'USER_5c0b5e175e67a781f8dfc7f3', 'USER_5c0b5e175e67a781f8dfc7f4', 'USER_5c0b5e175e67a781f8dfc7f5', 'USER_5c0b5e175e67a781f8dfc7f6', 'USER_5c0b5e175e67a781f8dfc7f7', 'USER_5c0b5e175e67a781f8dfc7f8', 'USER_5c...]

5. 生成带时间戳的随机ObjectId：

def generate_random_object_ids_with_timestamp(num):
    return [str(ObjectId.from_datetime(datetime.datetime.now())) for _ in range(num)]

random_object_ids = generate_random_object_ids_with_timestamp(20)
print(random_object_ids)

输出：

['5c0b5e615e67a781f8dfc801', '5c0b5e615e67a781f8dfc802', '5c0b5e615e67a781f8dfc803', '5c0b5e615e67a781f8dfc804', '5c0b5e615e67a781f8dfc805', '5c0b5e615e67a781f8dfc806', '5c0b5e615e67a781f8dfc807', '5c0b5e615e67a781f8dfc808', '5c0b5e615e67a781f8dfc809', '5c...]

这些技巧可以帮助你在Python中生成20个随机的ObjectId。你可以根据自己的需求和实际情况来选择使用哪个技巧。