that's good to know, thanks!

You don't have to put '0' in 'range()', it's already included

I see.Thank you!I need to learn the basic knowledge seriously.

There are some slight diffeneces between split() and split(' ').
split() will split for both spaces and newlines, while split(' ') will only split on spaces.
Also, if you have multiple spaces, split() will treat all the spaces as one, and only split once, whilst split(' ') would split multiple times.

Thank you!

1)You don't have to put ' ' in .split(), it's already included
2).split() returns a list, so list() is useless
3)One ':' in item[1::] will be enought