# List + Functions example

#1

The following code is from List + Functions and it's the example and the result comes out to 2. I don't understand how it came with result 2. Someone please explain. Thanks!

``````def count_small(numbers):
total = 0
for n in numbers:
if n < 10:
total = total + 1

lost = [4, 8, 15, 16, 23, 42]
small = count_small(lost)
print small``````

#2

Lets break this code in small parts and understand it..

Part 1

``````def count_small(numbers):
total = 0
for n in numbers:
if n < 10:
total = total + 1

Explanation of above code...
1. We've defined a function count_small that takes list as parameter (i.e is numbers)
2.We've defined a local variable `total` that is set to 0.
3. We started looping over our list numbers using iteration variable n.
4. Inside the loop...
A. if a number is less than 10 then add 1 to total, keep doing this until loop iteration gets finished.
5. return the total (which will return total count of numbers that're less than 10)

So our function takes a list and counts all the numbers less than 10 and gives us count of numbers that are less than 10.

Part 2

``````lost = [4, 8, 15, 16, 23, 42]
small = count_small(lost)
print small``````

1.We've defined a list named lost .
2.we called (calling the function) count_small function and give it list lost as argument. It will return total count of numbers less than 10 and we save it in variable `small`
3.We print this value, that is 2.

#3

Oh I get it! Thank you!

#4

Good work

#5

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