Overview | Programming Languages For Machine Learning. Programming Languages For Machine Learning. So, what programming languages should one learn to land a machine learning or data science job? Python is one of the most widely used programming languages in the AI field..Machine learning is about teaching computers how to learn from data to make decisions or predictions. For true machine learning, the computer must be able to learn to identify patterns without being explicitly programmed to..Since Weka and Rapid Miner are in Java, probably Java is the best programming language in term of library available. In term of speed performance, C C still unbeatable for big data. In the middle ground, I prefer Matlab due to its simplicity and rapid to program..