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Python Python Collections (Retired) Lists Redux Manipulating Lists

Evandro Luis Lima Pastor
Evandro Luis Lima Pastor
1,061 Points
Posted by Evandro Luis Lima Pastor
Evandro Luis Lima Pastor
1,061 Points

Task 1 not passes...

Hello,

Seriously, I have no idea how to solve this...

I can move the list item as requested. But to test the items, is another story. I know i have to do is something like:

  • get the item from the list
  • test if it is a number
  • if not delete it from the list.
  • store the number in a new list

But I just can't build the code... Any direction will be most appreciate.

Thanks!

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

# Your code goes below here
numero=the_list.pop(3)
the_list.insert(0,numero)

for item in the_list:
  try:
    int(item)
  except:
    item.delete()

2 Answers

Greg Kaleka
Greg Kaleka
39,021 Points
Greg Kaleka
Greg Kaleka
39,021 Points

Hi Evandro,

I think you're over-thinking this!

All you have to do is tell Python to remove "a", False, and [1, 2, 3]. No loops, no type checking, etc.

Here's my solution:

the_list = ["a", 2, 3, 1, False, [1, 2, 3]]

# Your code goes below here
# Challenge Task 1 of 3
# Move the 1 to position 0. You can do this in one step with .pop() and .insert().

the_list.insert(0, the_list.pop(3))

# Challenge Task 2 of 3
# Use .remove() and/or del to remove the string, boolean, and list members of the_list.

the_list.remove("a")
the_list.remove(False)
the_list.remove([1, 2, 3])
Evandro Luis Lima Pastor
Evandro Luis Lima Pastor
1,061 Points
Evandro Luis Lima Pastor
Evandro Luis Lima Pastor
1,061 Points

Hey Greg!

Jesus! So simple!!! I have problems to learn to program for YEARS. Maybe that's the reason...

Thank you for the tip Greg!