comparing two lists

[MRAB]

On 2021-02-25 00:42, Davor Levicki wrote:
> i have two lists
> 
> list1 = ['01:15', 'abc', '01:15', 'def', '01:45', 'ghi' ]
> list2 =  ['01:15', 'abc', '01:15', 'uvz', '01:45', 'ghi' ]
> 
> and when I loop through the list
> 
> 
> list_difference = []
> for item in list1:
> 
>    if item not in list2:
>      list_difference.append(item)
> 
> 
> and I managed to get the difference, but I need time as well
> because it is a separate item and 'uvz' does not mean to me anything in the list with a few thousand entries.
> I tried to convert it to the dictionary, but it overwrites with last key:value {'01:15' : 'def'}
> 
If the items belong in pairs, try making the pairs first:

 >>> list1 = ['01:15', 'abc', '01:15', 'def', '01:45', 'ghi' ]
 >>> list(zip(list1[0 : : 2], list1[1 : : 2]))
[('01:15', 'abc'), ('01:15', 'def'), ('01:45', 'ghi')]

and then work from there.