如何限制Loguru日志的小数位数？

Question

在使用loguru时，我想知道如何在一些日志输出中指定小数点的数量，请考虑以下不起作用的方法：

from loguru import logger
l1 = [0.123456]
# example from documentation
logger.info("If you're using Python {}, prefer {feature} of course!", 3.6, feature="f-strings")
# my try
logger.info("Eval {0:.3f}".format(l1))

Answer 1

问题是l1是列表，而您将其视为标量值

使用索引，它将工作

from loguru import logger

l1 = [0.123456]
# example from documentation
logger.info("If you're using Python {}, prefer {feature} of course!", 3.6, feature="f-strings")

logger.info("Eval {0:.3f}".format(l1[0]))

输出：

2021-02-12 06:02:23.680 | INFO     | __main__:<module>:5 - If you're using Python 3.6, prefer f-strings of course!
2021-02-12 06:02:23.682 | INFO     | __main__:<module>:7 - Eval 0.123