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Greg Isaacson
Courses Plus Student 702 PointsI Dont understand the question
Hi Guys!
I just did the previous tutorial and I understand everything fine!!
But now I get this question and I dont get it...
The question is asking for me to create a function that will select a random number...
so I create my function like this:
def random_item(): random.randint ()
so this selects a random integer...
then what? How do I minus one from it??
It says :
"get a random number between 0 and the length of the iterable, minus one"
I dont understand... "And the length of the iterable, minus one" I must do what, get a random number AND get the length of the iterable minus one????
import random
def random_item():
random.randint()
# EXAMPLE
# random_item("Treehouse")
# The randomly selected number is 4.
# The return value would be "h"
Greg Isaacson
Courses Plus Student 702 PointsSo I have adjusted it so it works like this:
import random
def random_item(treehouse):
Randomnumber = random.randint(0, len(treehouse) - 1)
return(Randomnumber)
print(???)
()
2 Answers
Vedran Linić
Courses Plus Student 18,802 Pointsimport random
def random_item(str):
len_of_str = len(str) # you get lenght of string
rand_los = random.randint(0, len_of_str) # you get number between 0 and lenght of string
rand_los -=1 # you take 1 from that number
return str[rand_los] # you get letter in the place of that string
Greg Isaacson
Courses Plus Student 702 PointsOk I understand it now!:)
It was using [] that threw me off.
To explain my answer and understanding:
import random ------ This imports the random library.
Create my function:
Def random_item(treehouse): return treehouse[] <<<<< These [] brackets I understand now will return the "letter" based of the random integer.
So it goes like this:
return treehouse[random.randint(0,len(treehouse)-1)]
Greg Isaacson
Courses Plus Student 702 PointsGreg Isaacson
Courses Plus Student 702 PointsI have done this...
am I on the right track..
``` import random def random_item(treehouse): Randomnumber = random.randint() return Randomnumber - 1 print(Randomnumber) ()