Whats the difference with formatting the variable as f"{40-mm}" and converting it to a string performance wise

At least half your statement is false. If it is true that it incorrectly handles the cases where all sides are negative, please provide a specific example.

In[1] is_triangle(0, 0, 0)
Out[1] False

In[2] is_triangle(-1, -1, -1)
Out[2] False

This solution is wrong - it does not take into account cases where all sides are 0 or negative.

great answer. thank you

I need to stop using a lot of lines, this one resumes it all.

Very clean solution

Nice

why don't use websites = ["codewars"], it is fast but dont pass kata, please tell me why, thanks

good solution

the python reads all the line becaue all in same line and same interpretting so python read it if it another line there would be an eror

nice

" Please keep in mind that the test cases ensure that the number of people in the bus is always >= 0. "

I understand, so does that mean that we can only use it inside the for loop?