TASK:Explain this PYTHON code in Simple English, each and every step the working etc.Explain Functions and library used, Use STEPS (1,2...) and POINTS to EXPLAIN import redef lexical_analyzer (expression):# regular expression that matches digits, alphabets, and characterspattern = r¹'\d+|[a-zA-Z]+[[^\s\d+a-zA-Z]+'#regular expressionnew_exp = re.findall(pattern, expression) #using builtin function findallreturn new_exp# Test the lexical analyzerexpression = input("Enter an expression: ")tokens = lexical_analyzer (expression)print (tokens)

import re # re is the library for regular expression this way you can import…

import re def lexical analyzer (expression): # regular expression that matches digits, alphabets, and characters pattern = '\d+|[a-zA-Z]+[^\s\d+a-zA-Z]+' #regular expression new_exp = re.findall (pattern, expression) #using builtin function findall return new_exp #Test the lexical analyzer expression = input("Enter an expression: " tokens = lexical_analyzer (expression) print (tokens)

import re def lexical analyzer (expression): # regular expression that matches digits, alphabets, and characters pattern = '\d+|[a-zA-Z]+[^\s\d+a-zA-Z]+' #regular expression new_exp = re.findall (pattern, expression) #using builtin function findall return new_exp #Test the lexical analyzer expression = input("Enter an expression: " tokens = lexical_analyzer (expression) print (tokens)

Database System Concepts

7th Edition

ISBN:9780078022159

Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Chapter1: Introduction

Section: Chapter Questions

Problem 1PE

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