Could someone please explain what [...] is in Python?

Question

nums=[1,2,3]
nums.append(nums)
print(nums)

then we get:

[1,2,3,[...]]

I'm wondering what [...] means...
Could someone please help?

Answer 1

Read this:
https://www.tutorialspoint.com/JUMP_LINK__&&__python__&&__JUMP_LINK/list_append.htm