1. 日志-logging
最后更新于：2022-04-02 07:44:49
#### 打印日志
```python
# 共5个级别
logging.info('this is info log.')
logging.debug('This is debug log')
logging.warning('this is warning log')
logging.error('this is error log')
logging.critical('this is critical log')
```
默认debug和info并没有打印
```
# 设置默认打印级别后，debug和info都正常打印
logging.basicConfig(level=logging.DEBUG)
```
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