This is an overview of the most popular data science (machine learning, data mining, and artificial intelligence) tools for Python. Interest in these fields (artificial intelligence (AI), machine learning (ML), etc.) has increased over the past 5 years and python earned the first place as the most popular "data science" language. TensorFlow, PyTorch, Caffe, Pandas, Keras, Scikit-Learn, SciPy, NumPy and some other tools are presented in this article. This article will be useful for beginner data scientists and people who are just recently started working with machine learning, professionals are already familiar with this toolset.