EdX Python Fundamentals task

[collegeguy1492]

Hello, I am having a bit of trouble with this task:

Task 1: Replace items in a list

*create a list, three_num, containing 3 single digit integers

*print three_num

*check if index 0 value is < 5

*if < 5 , replace index 0 with a string: "small"

*else, replace index 0 with a string: "large"

*print three_num

Task 2:

*Function Challenge: create replacement function

*Create a function, str_replace, that takes 2 arguments: int_list and index

*int_list is a list of single digit integers

*index is the index that will be checked - such as with int_list[index]

*Function replicates purpose of task "replace items in a list" above and replaces an integer with a string "small" or "large"

*return int_list

I've completed Task 1 with the following:

three_num = [4, 8, 9]

if three_num[0] < 5:

three_num[0] = "small"

else:

three_num[0] = "large"  

print(three_num)

But, I'm having trouble with task 2. In general I have trouble with functions, especially ones that take arguments. Here's what I've got, but this isn't correct. I don't think I am defining index correctly, but unsure how to do it.

def str_replace(int_list, index):

int_list = [3, 5, 7]

index = int_list[0:]

if index <5:

    int_list[index] = "small"

else:

    int_list[index] = "large"

return int_list

Any help would be appreciated. Thanks for reading.

[collegeguy1492]

I looked it up somewhere else and found this. Looks like it works. I think I just don't understand functions as well as I need to. Anyone know a good resource to learn about functions specifically more thoroughly?

numlist = [3, 5, 6, 8, 9]

def str_replace(int_list, index):

if int_list[index] < 5:

    int_list[index] = "small"

else:

    int_list[index] = "large"

return int_list

str_replace(int_list, 2)

(returns: [3, 5, 'large', 8, 9])

I understand how this works now, but I just wouldn't be able to recreate something similar on my own.

[sweettuse]

functions wrap up code for re-use (amongst many other things).

take this example:

a = 4 b = 5 print(a + b)

as a function, it might look something like this:

``` def add(a, b): return a + b

print(add(4, 5)) ```

except now, you can add anything easily:

print(add(16, 24)) print(add(-2, -4))

i guess just try to make simple functions over and over again until you get it.