How to use arrays in Python 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.

How NumPy speeds array math in Python. A big part of NumPy’s speed comes from using machine-native datatypes, instead of Python’s object types.

Unlike a list in say Python, however, Java arrays are of a fixed size. There is no way to remove elements or to add to the array at run time. This restriction is great for optimized code but of ...