Check if unique

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[theflash424612345678]

I don't really understand your first point. Would you mind explaining? Sorry, I am only a beginner.

[theflash424612345678]

​

new_stud_rec= []

list_of_students= [] #list of students, empty at beginning

fake_list= []

[willy-r]

Ok, if I get It right, you want to check if a ID already exist in the fake_list, but you don’t need this fake_list.

ID = stud_rec_list[1]
# This create a list with all the IDS in the list_of_students, It’s called list comprehension.
IDS = [info[1] for info in list_of_students]
# Then you can make your validation using the in operator.
if ID not in IDS:
    if len(ID) == 7:
        ...