Python Lexer and Tokens for Mini-Pascal grammar

Hi I need help creating a lexer and finding the tokens for the Mini-Pascal grammar

This is the link for the grammar: https://www.cs.helsinki.fi/u/vihavain/k06/okk/items/minipascalsyntax.html

The output should be something like this:

If the program reads a line like: a# = 5.5

The output should be:

ID a REAL

ASSIGN

REAL_CONST 5.5

Thank you in advance