I'm using `re.findall` like this:

```
x=re.findall('\w+', text)

```

so I'm getting a list of words matching the characters `[a-zA-Z0-9]`.
the problem is when I'm using this input:

```
!"#$%&'()*+,-./:;<=>?@[\]^_`{|}~!"#$%&'()*+,-./:;<=>?@[\]^_`{|}~:

```

I want to get an empty list, but im getting ['*', '*']. how could
I exclude those underscores?