I am a young person in the UK who wants to have a job in the IT sector. Is there an internationally recognised qualifications or certificates for Python or any other programming language where I can take a course in a language and come out with a qualification for my CV.
Speaking as someone in the US (silicon valley specifically), there's no common / standard certificate or qualification other than a college degree. I've even noticed a negative correlation between Java certifications and interview performance.
The best thing you can do is have projects on Github and link to it on your resume. I always look closely at Github links when I get them - most of the time, they're not impressive, so you do need more than it just existing.