['PCIe Card 1 (HBA 9400-8i)', 'PCIe Card 22 (RS243-18i)', 'Logical Driver 0', 'Logical Driver 1', 'Disk 3'] python找到出现Logical Driver 的索引index
时间: 2024-01-01 15:04:15 浏览: 28
你可以使用以下代码来找到包含 "Logical Driver" 的索引:
```python
data = ['PCIe Card 1 (HBA 9400-8i)', 'PCIe Card 22 (RS243-18i)', 'Logical Driver 0', 'Logical Driver 1', 'Disk 3']
index = [i for i, item in enumerate(data) if "Logical Driver" in item]
print(index)
```
这将输出:
```python
[2, 3]
```
这表示 "Logical Driver" 出现在索引为 2 和 3 的位置上。请注意,索引是从0开始计数的。
相关问题
['PCIe Card 1 (HBA 9400-8i)', 'PCIe Card 22 (RS243-18i)', 'Logical Driver 0', 'Disk 0', 'Disk 1', 'Logical Driver 1', 'Disk 2', 'Disk 3'] python计算出字符中有Disk的个数
你可以使用以下代码来计算列表中包含 "Disk" 的元素个数:
```python
data = ['PCIe Card 1 (HBA 9400-8i)', 'PCIe Card 22 (RS243-18i)', 'Logical Driver 0', 'Disk 0', 'Disk 1', 'Logical Driver 1', 'Disk 2', 'Disk 3']
count = sum("Disk" in item for item in data)
print(count)
```
这将输出:
```python
4
```
这表示列表中包含 4 个包含 "Disk" 的元素。
pg_hba.conf METHOD scram-sha-256
pg_hba.conf is a configuration file used by PostgreSQL to manage client authentication. The "METHOD scram-sha-256" in pg_hba.conf refers to the use of the SCRAM-SHA-256 authentication method for client authentication.
SCRAM-SHA-256 is a secure password-based authentication mechanism that is based on the Salted Challenge Response Authentication Mechanism (SCRAM). This mechanism is designed to protect against password theft and eavesdropping attacks.
When a client connects to a PostgreSQL server, the server will check the pg_hba.conf file to determine whether the client is allowed to connect and what authentication method to use. If the METHOD in pg_hba.conf is set to scram-sha-256, the client will be required to authenticate using the SCRAM-SHA-256 method.
Overall, using the SCRAM-SHA-256 authentication method in pg_hba.conf can help to improve the security of your PostgreSQL database by ensuring that client connections are properly authenticated.