FAQ: Working with Lists in Python - Consecutive Lists: Range

Frequently Asked Questions Python FAQ
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This community-built FAQ covers the “Consecutive Lists: Range” exercise from the lesson “Working with Lists in Python”.

Paths and Courses
This exercise can be found in the following Codecademy content:

Data Scientist
Analyze Data with Python
Computer Science
Analyze Financial Data with Python
Build Chatbots with Python
Build Python Web Apps with Flask
Data Analyst

Learn Python 3
CS101 Livestream Series

FAQs on the exercise Consecutive Lists: Range

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2

Hi. There seems to be an issue with this problem. In the second part of the p, it asks to print the range in list form. However, I could also pass the exercise by solely printing range form. This didn’t really make sense, and I had to research and practice a bit with the compiler. I wish you can fix this issue. Thanks in advance!

2 Likes
3

i’m stuck here too:
zero_to_seven = range(0,8)
print(list(zero_to_seven))

produces in the output:
[0, 1, 2, 3, 4, 5, 6, 7]

but it gives me an error Did you create the range zero_to_seven with numbers from 0 to 7?
yes, it’s shown above??
confused :-S

1 Like
7

For whatever reason, it wants you to do the single range input (i.e., zero_to_seven=range(8)) even though the lesson was meant to demonstrate how to range based on a two input statement.

3 Likes
8

most likely an error in your desctiption in:

Consecutive Lists: Range

4/12

it say:
The list() function takes in a single input for the object you want to convert.
However you use range() against it which outputs for instance 0, 9 - this are two arguments. You may want to correct this.

9

I don’t think it is an error.

my_range = range(10)

print(my_range) # range(0, 10) 
print(type(my_range)) # <class 'range'>

my_list = list(my_range) 
print(my_list) # [0, 1, 2, 3, 4, 5, 6, 7, 8, 9]

In the description, first an object of the range class is created via the statement my_range = range(10).
The object returned by range is a single object of the range class.

Then, this object is passed as an argument to the list function in the statement my_list = list(my_range).
The list function accepts one argument only (in this example, the my_range object).

When calling range, we can pass it a single argument (stop) [start defaults to 0, step to 1] or we can pass it two arguments (start, stop) [step defaults to 1] or we can pass it three arguments (start, stop, step). All of these calls will result in a single object of the range class.

The list function can accept at most one argument. If we omit the argument, then an empty list is created. If we provide an argument, then only one argument is allowed.

Hence, the statement

The list() function takes in a single input for the object you want to convert.

seems correct.

10

ok got it… thanks for clarification I did some testing w/ the python interpretador and can confirm it returns an object. I wish the lesson here would have given more details on what the function range actually is returning.