a bug in flopp: 17.8. Exercises

[reihanehk]

This exercises is based on flatting a nested list.
My output result/Actual value (m_list) is exactly the same as expected value, but it shows me failed!
I found that the order of my list is different from the order of expected value and it causes the failed result.
I think you should fix it! while the ordering is depensing on "flatting the list method"

To perevent this error, you can ask about "sorting the m_list". so no matter the method, the results will be the same.

My Actual value is:
['good morning', 'Reach for Tomorrow', 'mariners song', 'music', 'instagram', 'On my Own', 'monster', 'Words dont come so easily', 'lead me right']
The Expected value is:
['good morning', 'music', 'instagram', 'On my Own', 'monster', 'Words dont come so easily', 'lead me right', 'Reach for Tomorrow', 'mariners song']

and my code is:

import copy
d = ['good morning', 'hello', 'chair', 'python', ['music', 'flowers', 'facebook', 'instagram', 'snapchat', ['On my Own', 'monster', 'Words dont come so easily', 'lead me right']], 'Stressed Out', 'Pauver Coeur', 'Reach for Tomorrow', 'mariners song', 'Wonder sleeps here']

def flatten(array1):
    array2=[]
    for l in array1:
        for m in l:
           array2.append(m)
    return(array2)        
 
m_list=[]
k=0
list1=copy.deepcopy(d)
while k==0:
    k=1
    list2=[]
    for lv1 in list1:
        if (type(lv1)==str) and ('m' in lv1):
            m_list.append(lv1)
        elif (type(lv1)!=str):
            list2.append(lv1)
            k=0
    list1=flatten(list2)

print(m_list)