Help me to solve the code #0009

Question

without key its output is 16 and with key its output is 25...
i don't understand why..?
describe in deatil..

https://code.sololearn.com/c8UDZ4GH7z1o/?ref=app

Answer 1

y=['hihi', 'solosolosolosolo', 'learnlearnlearnlearnlearn']

if u print len(max (y))
it will print alphabetical ordered max..
as s is highest amongst h and l
so...
len('solosolosolosolo') which is 16 is the ans

when u print len(max(y, key=len))

it means...max function will word on string length...and return the max length string..

which is...learnleanlearnlearnlearn
=>25..

key tells u on which attribute max function will work on..