What Is the meaning of this operator- [::]. And what's the difference between these two- [:] and [::]

Question

Plz answer this question

Answer 1

These are list slicing operations. They generally take index values but when they are not mentioned, it takes into consideration the default values which is shown below.

spam = [1,2,3,4,5,6]

// Both are same
print(spam[:])
print(spam[0:len(spam)])

// Both are same
print(spam[::])
print(spam[0:len(spam):1])