# 15.Median problems

#1

15

On my compiler (not in codecademy) everything is ok, but here i have some problems:

## Oops, try again. median([4, 5, 5, 4]) returned 4 instead of 4.5

returns the median of a row

``````def median(x):
x=sorted(x)
med=0
if len(x)%2!=0:
med=x[int((len(x)-1)/2)]
else:
med=(x[int((len(x)/2-1))]+x[int((len(x)/2))])/2

return med``````

#2

on your computer you might have python3, and codecademy has python2. There is a fundamental difference in this python version, python3:

``5 + 4 / 2 = 4.5``

in python2 however the number get floored:

``5 + 4 / 2 = 4``

you can solve this problem by using `float()` or divide by a float (2 is the same as 2.0, but then you get a floating number as result, not a integer)

#3

Thank you so much! I didn't know that

#4

in python3 you can mimic python2 behavior:

``5 + 4 // 2 = 4``

by using `//`, anyway, python2 and 3 have some differences, you might want to google them, otherwise you might come across weird errors when working on your computer, the most important one, in python2 you can do:

``print "something"``

in 3 you have to use brackets:

``print("something")``

oh, and `raw_input` no longer exist in 3, it is now `input`.

#5

I heard about input () between python 2. and python 3.
But did not know that codecademy uses python 2.
And every time ask myself why I do not need any parentheless in codecademy