a code to update your resume based on a job description would likely need to be quite complex and specific to your resume format. Additionally, writing a complete resume from scratch based on a job description is not a task that can be automated by a simple script. However, I can give you a simple code that can help you extract relevant information from the job description and make suggestions for updating your resume:

import re

def extract_keywords(text):
    keywords = set()
    text = text.lower()
    text = re.sub(r'[^\w\s]', '', text)
    words = text.split()
    for word in words:
        if len(word) > 3:
            keywords.add(word)
    return keywords

def update_resume(resume, job_description):
    keywords = extract_keywords(job_description)
    for keyword in keywords:
        if keyword in resume.lower():
            continue
        print(f'Consider adding "{keyword}" to your resume.')

# Example usage
resume = """
Your resume text here
"""
job_description = """
Job description text here
"""
update_resume(resume, job_description)

This code will extract keywords from the job description and check if they are present in your resume. If a keyword is not found in your resume, it will suggest that you consider adding it. Keep in mind that this code is a starting point, and you will likely need to make changes and improvements based on your specific needs and the format of your resume.