Please help with the pseudocode in python

trie insect:

Guide:

A trie is a tree$-$like data structure that stores a dynamic set of strings. Nodes are

associated with a character, and traversing down the tree gives a string.

Pseudocode:

FUNCTION trie insect$\{$root$,$ key$)$:

INITIALIZE current node as root

FOR each character in key:

IF character is not in current node's children:

ADD a new node for the character

MOVE to the child node of the character

MARK current node as end of word