无法在python中设置日志记录级别

Question

以下代码和yaml配置会从Eclipse / Pydev或命令行中生成警告消息，但不会生成调试消息。在未注释打印语句的情况下，配置字典看起来不错。我想念什么？

setupLogging.py：

#!/usr/bin/env python3

import logging.config
import yaml

def setupLogging():
    with open('loggingConfig.yaml', 'rt') as file:
        config = yaml.safe_load(file.read())
        #print(str(config))
        logging.config.dictConfig(config)

if __name__ == "__main__":
    setupLogging()
    logger = logging.getLogger(__name__)
    logger.debug("logger debug")
    logger.warning("logger warning")

loggingConfig.yaml：

---

version: 1

disable_existing_loggers: False

formatters:

    simple:
        format: "%(asctime)s - %(name)s - %(levelname)s - %(message)s"

handlers:
    console:
        class: logging.StreamHandler
        level: DEBUG
        formatter: simple
        stream: ext://sys.stdout

root:
    handlers: [console]

...