recursively flatten a list

After you save changes, the snippet will be publicly available to anyone with the link that will be generated.

Give the snippet a concise descriptive title:
e.g A function to add two numbers

Save and get the link

Copied! waiting

Output:

Subscribe to Pynerds newsletter, get infrequent emails on tutorials that might interest you

Loading

You have successifully subscribed

You are already subscribed

Please enter a valid email

Oops! something bad happened, try again later

name

Email

Loading

Message sent to pynerds administrators

Oops! something bad happened,try again later

Please ensure that email is valid and message exceeds 20 characters

Name

Email (required)

Subject (optional)

Message

You can also send your message to contact@pynerds.com