The index(), count() and other "functions" you mention aren't standalone functions, they are methods of lists. That means you apply them to the list, like this: test = [1, 2, 3, 4, 5, 6] print(test.index(3)) # print index in list of the element of value 3 The list methods are described in the documentation . More on reddit.com

I think people who know the basics and go to w3 to refresh stuff recommend it but they themselves didn't learn it there. More on reddit.com

The line in bold is what is giving me an error It's a good idea to post the full error message when asking for help with an error. Besides that i assume you are trying to shuffle a string, you can't do that in python. You need to shuffle a list, and then rejoin it back to a string. pass_list = list(password) random.shuffle(pass_list) password = "".join(pass_list) print(password) More on reddit.com

Sure. A list is a data type, what is does is stores other types of data in order example = [I’m a string”, 2, 2.45, [“i’am”, “a” “list inside”, “another”], (“tuples”, 2,3), {“set”}, {“my” : “dictionary”}] Types are important to Python, a list is really important to Python because it’s ordered. Each list can be indexed and sliced because they are ordered. print(example[2]) >>>2.45 List start their index at 0 so [2] is the third element. But the last item is… print(example[-1]) >>>{“my”, “dictionary} We can slice them further. print(example[1:4]) #print 2nd to 5th element. >> [2, 2.45, [“i’am”, “a” “list inside”, “another”]] Slicing format example[start:stop:step] and we can go further if we know it’s list and lists, print(example[4][2]) >>>”list inside” Step will skip x amount hint in the list i.e. every 4th element. This can be done negatively as well. And reverse the list. We can loop directly through list… for element in example: if element == 2: break print(“No 2 in the list”) Or check with in if 2 in example: print(“There is a 2”) List can have comprehensions, we loved them so much we made them easier to make list_of_squares = [number**2 for number in range(5)] Lists are great because like all types they have useful methods. Such as, sort(), .append(), .insert(). You can easy check how many elements there are with len(). And since lists in Python can hold anything, anything, you can do a lot of complex requests coming from them. Lists are great for…loops. We want to do the same thing to a bunch of other things. More on reddit.com