Using NumPy for array and matrix math in Python. Many mathematical operations, especially in machine learning or data science, involve working with matrixes, or lists of numbers.

To create an array in Python, we can use a type of variable called a “dictionary.” This is an associative array, meaning that it is made of value/key pairs. This looks like so: ...

Python cares about the difference between a scalar and a vector. These kinds of errors come up ALL the time when students are creating the first Vpython calculations. What Do I Think About Khan ...

Vpython has a built in vector class (or function - I don't know what I am talking about). There are also things like dot-product, magnitude, normal vector. With matplotlib, ...