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Python Practice Creating and Using Functions in Python Practice Functions That's Odd

Ali Colak
Ali Colak
2,192 Points

Practice Creating and Using Functions in Python

What do I have to do to get this to work? I'm a little lost.

create_a_function.py
num = int(input("Put in a number: ")) 

def is_odd(num):
    if is_odd % 2 != 0:
        return false
    else:
        return true

2 Answers

Steven Parker
Steven Parker
229,644 Points

There are several issues, here are some hints:

  • the name of the function is "is_odd", it should not be referenced inside the function code
  • you will need to test the value of the function argument, which is "num"
  • this challenge asks you only to construct the function, you won't need any code outside the function
  • you won't need to input anything
  • the function needs to return True when the argument is not divisible by 2
  • the Python values of "True" and "False" both start with a capital letter
Asher Orr
seal-mask
.a{fill-rule:evenodd;}techdegree seal-36
Asher Orr
Python Development Techdegree Graduate 9,408 Points

Hi Ali!

When you click "Check Work" on a Treehouse challenge, a program will run your code. It will replace your function's parameter with a specific argument.

Here's what I mean:

Let's say we wrote this code for a Challenge Task.

def name_function(name):
    print("Hello {}".format(name))

You don't need to define the "name" parameter before. When you click "Check Work," Treehouse will run this code under the hood. It might look like this:

name_function("Ali")

In which case, the checker would see the string "Hello Ali!"

It can confuse the checker to define a function argument beforehand, so I would avoid that (unless you're specifically instructed to.)

So:

num = int(input("Put in a number: "))
#remove the line of code above.

def is_odd(num):
    if is_odd % 2 != 0:
        return false
    else:
        return true

Now, let's get into your function. First:

def is_odd(num):
    if is_odd % 2 != 0:
    # you want the if statement to check the num- not the function is_odd.

It should look instead like this:

def is_odd(num):
    if num % 2 != 0:

Also, think about the logic in your function:

    if num % 2 != 0:
        return False
        # side note: If you return True or False, make sure to capitalize the first letter.
        # otherwise, Python will think you're referring to a variable named "true" or "false"

As Stephen said, the function needs to return True when the argument is not divisible by 2.

I hope this helps. Let me know if you have any questions!