why show error - python coding challenges

why show error

Question related to mission Lightbulb Start Watching

Hi, guys, I run my code in Pycharm with Python3.7, it's run normally and no error. but when I run this code in here, it show error "TypeError: '<' not supported between instances of 'NoneType' and 'datetime.datetime', sum_light, 14", why？

Created at: 2021/08/05 06:12; Updated at: 2021/08/10 06:16
The question is resolved.

task.lightbulb-start-watching

by:

Rating: 0 Sign up to vote

You ClassRoom Demo is Ready With the new tool CheckiO ClassRoom, you will be able to analyze your students' progress, have your own leaderboard, change missions order on the map, and so on.