Arrays in Python give you a huge amount of flexibility for storing, organizing, and accessing data. This is crucial, not least because of Python’s popularity for use in data science.

Use numpy.array for creating arrays from Python lists. For specific types of arrays, use functions like numpy.zeros, numpy.ones, numpy.arange, or numpy.linspace for equally spaced values. 4 ...

i.e python is actually allocating the memory in chunks for different length sizes thus it is intelligent enough to know that when it needs extra space for data allocation then it gives them extra size ...