Slices first_4

Question

Here's the question: Alright, these tasks are a bit harder than the others so far in this course but I know you can do them! In this first one, create a function named first_4 that returns the first four items from whatever iterable is given to it. 
this is my code:
def first4(a,b,c,d,e,f,g): 
      return first4[0:4] 
I am getting an error that says
TypeError: first_4() missing 6 required positional arguments: 'b', 'c', 'd', 'e', 'f', and 'g'
What does this mean? and how do I fix the problem?
slices.py
def first_4(a,b,c,d,e,f,g):
      return first_4[0:4]

Sean M · Accepted Answer

Provide something to be passed through.
For example, a_list is passed into the function and will print the first 4 values.
```python
def first4(alist):
    return a_list[:4]

Kent Åsvang · Answer

Okey, so lets take a look at what you are doing : 
Python
""" You have defined a procedure that takes 7 arguments, while the challenge is telling you that the argument is 
going to be an iterable ( f.eks a list og string ). So you only need one argument """
def first_4(a,b,c,d,e,f,g):
""" then you return a slice of you own function, this will most definitely produce an error. 
You were asked to return the first 4 items of whatever iterable is passed through the function."""
      return first_4[0:4]

So, lets look at how to solve this, here's the task we are given ;
"create a function named first_4 that returns the first four items from whatever iterable is given to it."
first we declare the function
Python 
def first_4():

It says an iterable is given to the function, this could be a list or a string for example, so lets put that in : 
Python
def first_4(iterable_thing):

Then it tells us that we should return the first 4 items in the iterable, that one you were pretty close on  : 
Python
def frist_4(iterable_thing):
    return iterable_thing[0:4]

Hope this helped you a little. Have a nice day.

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Camilla Bendetti

Camilla Bendetti

Slices first_4

2 Answers

Sean M

Sean M

Kent Åsvang

Kent Åsvang