How to add elements to the head and tail of a list by python

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Add elements to the head and tail of the list add elements list.insert (index,new_element) to the header

@ index is the insertion position of the new element, and when index=0, the new element is added to the header.

@ new_element is the element to insert.

Example:

Names.insert (0) adds an element list.append (new_element) to the tail

Example:

Several methods of adding elements to list by names.append ('Bill')

Append (x) appends the element to the end of the list

Extend (list_) adds each element in the list list_ to another list separately

Insert (iPermine x) inserts element x into the list in position I, starting with 0

List3 = list1+list2 merges the elements in list1 and list2 into a new list

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