Many courses offer certificates upon completion. This can be a great addition to your portfolio or CV as it will show that you are proficient and that your skills have been validated by at least one standardized source. While this isn’t the only item, you’ll have on a resume. It is still a great supplement that shows proof of expertise to a potential employer. Certifications for specific programming languages demonstrate proficiency in that language that many other applicants may not be able to boast. This can help you stand out against the competition and land a meaningful job that utilizes your skills in Python.