Split in python 3

Question

Why in this code, after omitting 'e' by split we have following result ?

['Comput', 'r sci', 'nc', ' ']

While The 'e' after 'c' omitted and ' ' remained, but by omitting 'e' between 't' and 'r' there is no ' ' remained; why ?

https://code.sololearn.com/cDG00Df301gS/#py

Answer 1

When string.split("separator") encounters a separator, it creates two strings. The left string ends just before the separator and the right string begins right after the separator. If your string starts or ends with a separator, the left or right string will be empty, respectively - i.e. ' ' (with no space between the single quotes).

To see this, try your code with "end game".

Answer 2

Because otherwise you lose the information that there was an 'e' at the end of science. And therefore would not be able to generate the original string back.

Answer 3

Think of it as replacing an e with a comma. You'll get it

Answer 4

It's a fascinating problem. The method seems to create an empty string whenever it encounters a string ending in a separator, and when it encounters a double separator, it removes one, creating a string ending in a separator, which results in an empty string. If the double separator is internal, e.g. 'seem', you get one empty string.

Answer 5

Thanks for your description

it is interesting that if have extra 'e' at the end of string ... by trying code with "computer sciencee"