This is the first time I've came across this. Just printed a list and each element seems to have a `u` in front of it i.e. 

```
[u'hello', u'hi', u'hey']

```

**What does it mean and why would a list have this in front of each element?**

As I don't know how common this is, if you'd like to see how I came across it, I'll happily edit the post.