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Python Python Collections (Retired) Lists Redux Manipulating Lists

Jeremy Graslie
Jeremy Graslie
2,037 Points

Task 1 is no longer working

I am getting stuck with the challenge where it keeps asking me to go back and fix task 1. I'll pass task 1, but then when I write the code for task 3 it will tell me "Task 1 is no longer working".

Can someone look at my code and tell me what's going wrong?

lists.py
the_list = ["a", 2, 3, 1, False, [1, 2, 3]]

# Your code goes below here
the_list.insert(0, the_list.pop(3))
the_list.remove("a")
the_list.remove(False)
the_list.remove([1, 2, 3])

the_list.extend(4, 20)
Jeremy Graslie
Jeremy Graslie
2,037 Points

it seems like the_list.remove([1, 2, 3]) still leaves that list of numbers at the end of the list, and I'm wondering if that's causing part of the problem

the_list
[1, 2, 3, [1, 2, 3]]
the_list.remove([1, 2, 3])
the_list
[1, 2, 3]

2 Answers

Chris Freeman
MOD
Chris Freeman
Treehouse Moderator 68,064 Points

When you see "task 1 is no longer working" it usually means a syntax error was added. in your last line:

the_list.extend(4, 20)

Generates the error Bummer! TypeError: extend() takes exactly one argument (2 given)

The correct answer is to generate the numbers from 4 to 20 using range:

the_list.extend(range(4, 21))

Jeremy Graslie
Jeremy Graslie
2,037 Points

Thanks! It looks like that was what was missing! :D