Python: Solving ValueError: Too many values to unpack

Key Takeaways

Hello everybody. Welcome to another Python video tutorial. In this video, what we're going to be talking about is this value error. Too many values to unpack. What is it? Uh what do we do to get this and what do we do about it? So, uh the easiest thing to show you guys is just by example. So, literally, I'll just call it example. And the way that you're going to get this is when you try to unpack variables from like a li something like a list in python you also will get it uh whenever you're unpacking say a numpy array for example same same story here. So example as you can see this example is a you know it's comma delimited it's got you know if you said example and then brackets zero oops zero like this it would correspond to one one would be number three two would be number four and so on and so when you unpack you can unpack these values into so instead of saying like um let's say x equals example zero you can unpack packed and then like y right equals example one and so on. You can unpack the val uh the values straight into the variables really quickly by doing something like this where x y uh equals example. And now the problem with this though is we have four values here and we're only specifying two. So let's go ahead and specify even three for example. So what it's going to attempt to do is it's going to attempt to take all the values here and just like store them into these variables. But the problem is it has one too many. So what you'll get when you run this is the following right value error too many values to unpack. But if you set xyz uh a and then you run this you won't have any problems. It's fine. And then when you go later to you know access these variables like print x print y print z print a oops print a and you run that you know they're stored. And so the other time that you'll see it and what you wouldn't want to get confused by is for example lists within a list uh like this. So let's say x is 1 2 3 4 5 y is um three. We're going to run off the screen. So let me just give them like three variables in each list. Three, five, seven. And then z and a can just have one one value. Let's say um so you can still do this, right? So, so when I run this, um, there you go. You've got, you know, this new list, right? So, anyway, um, that's basically basically all it is to this whole value error. Too many values to unpack. Basically, you just tried to unpack uh from some sort of variable that had too many values uh corresponding to how many variables you were feeding it. So, that's pretty much um all you need to do is just add another variable, figure out what you're missing in the list. So anyways, uh hopefully that was useful for some of you guys. As always, thanks for watching and thanks for all the support and subscriptions.