Check the args when init class and fix some typo.

[ponytailer]

• throw the errors earlier
• common line_length = 79 in black config

[abersheeran]

To be honest, I don't like the 79 limit, so I didn't configure this option before.

[ponytailer]

To be honest, I don't like the 79 limit, so I didn't configure this option before.

ok, I remove it.

[ponytailer]

BTW, can support simple rate-limit in memory? It can test the project quickly without redis

[abersheeran]

Yes, we can add a new memory backend. In fact, I wanted to add this function at first, but I've been busy with other work. If you are willing to submit PR, I will be happy to help you complete it together.

[ponytailer]

Yes, we can add a new memory backend. In fact, I wanted to add this function at first, but I've been busy with other work. If you are willing to submit PR, I will be happy to help you complete it together.

OK, I will add it later.