An issue I encountered recently with argparse was when I tried running a script with its argument changed from something like:
```
parser.add_argument('--please_work')
```
and was replaced with:
```
parser.add_argument('--please-work')
```

I have not ever seen anyone add an argument where a function has two arguments existing in a function, such as please_work and please-work. I think this is a pretty safe feature to implement, plus it enforces good practices. So if I wrote something such as:

```
parser = argparse.ArgumentParser(description="check this out")
parser.add_argument('--please-work')
```

Then I could call the program using:
```
python3 test.py --please_work True
```
or:
```
python3 test.py --please-work True
```