<p>What number would you give someone who wants a concrete target number for API code coverage?</p>

<p>UPDATE: To clarify, statement/line code coverage. I realize concrete numbers don't make much sense, but this is for the situation where you tell people that concrete numbers don't make much sense and they still insist on getting a number from you no matter what. I specifically wrote API/SDK because some people might find lower code coverages more acceptable for application/GUI level software, as opposed to libraries, where more interfaces are exposed.</p>

Putting
```
*args
```
and/or
```
**kwargs
```
as the last items in your function definition’s argument list allows that function to accept an arbitrary number of arguments and/or keyword arguments.
For example, if you wanted to write a function that returned the sum of all its arguments, no matter how many you supply, you could write it like this:
```
```
def my_sum(*args):
    return sum(args)
```
```
It’s probably more commonly used in object-oriented programming, when you’re overriding a function, and want to call the original function with whatever arguments the user passes in.
You don’t actually have to call them
```
args
```
and
```
kwargs
```
, that’s just a convention. It’s the
```
*
```
and
```
**
```
that do the magic.
The official Python documentation has
a more in-depth look
.