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Python Python Collections (Retired) Lists Redux Manipulating Lists

Posted by Skidrow Triangle
Skidrow Triangle
657 Points

Can you explain why this program is not passing?

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

Your code goes below here

num = the_list.pop(3) the_list.insert(0,num) while True: try: del the_list[0] except: break

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

# Your code goes below here
num = the_list.pop(3)
the_list.insert(0,num)
while True:
    try:
        del the_list[0]
    except:
        break
Grigorij Schleifer
Grigorij Schleifer
10,365 Points
Grigorij Schleifer
Grigorij Schleifer
10,365 Points

Your while loop will delete every single item of the list and when the loop is done. There will be an empty list.

Try to run this little piece of code:

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

while True:
    try:
        print("Say bye to {} ",format(the_list[0]))
        del the_list[0]
    except:
        break

print("This is your list after the loop {}".format(the_list))

1 Answer

Grigorij Schleifer
Grigorij Schleifer
10,365 Points
Grigorij Schleifer
Grigorij Schleifer
10,365 Points

Hi Markus,

look at my code suggestion:

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

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


# no need for a while loop
# just remove the items by using the value as remove method argument

the_list.remove("a")
the_list.remove(False)
the_list.remove([1, 2, 3])

Makes sense?

Grigorij

Skidrow Triangle
Skidrow Triangle
657 Points

I think I misunderstood the question. Thanks