access
1. The index starts from 0
The index is specified as -1, which tells Python to return the last list element.
This convention also applies to other negative indices, for example, index -2 returns the second-to-last list element, index-3 returns the third-to-last list element, and so on.
Modify, add, delete elements
1. Modify
* list[index] = 'dsafasfdsa'
2. Add
* add element at the end
list.append()
* insert element into list
list.insert(index, 'dfasfdsaf')
3. Delete elements
* delete the element with index index at any position
del list[index]
* Pop the element at the end of the list
lastElement = list.pop ()
* Pop up the element whose index is index
popedElement = list.pop(index)
* remove element by value
list.remove('sdfsafdsa')
remove() removes only the first specified value. If the value to be removed may appear multiple times in the list, a loop needs to be used to determine if all such values have been removed.