What does this Python default argument syntax do?

Asked Oct 04 '17 at 01:37

Active Oct 04 '17 at 01:37

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I've been searching around for quite a while, and I cannot for the life of me figure out what the following function definition does:

class ImageManager:
    # Unimportant Stuff

def image_draw(master, items=4, drawer: ImageManager = None, **kwargs):
    # More Code

Just to be clear, I'm wondering about the syntax of the default argument drawer in the function image_draw. It appears to provide a default value for an argument, but why does it set a same-scope classname to None? Why not just drawer=None? It just doesn't make sense to me at the moment.

This code is for an internal system that my job is to improve.

Hopefully someone can help.

asked Oct 04 '17 at 01:37

Jason Cemra

1

`drawer: ImageManager` = Type hint. – cs95 Oct 04 '17 at 01:38
1

`ImageManager` is the required [type](https://docs.python.org/3/library/typing.html) and `None` is the default value. – Paul Rooney Oct 04 '17 at 01:39
@cᴏʟᴅsᴘᴇᴇᴅ Thank you! I just needed to know those key words. – Jason Cemra Oct 04 '17 at 01:40

What does this Python default argument syntax do?

0 Answers0