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.

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 ...

"- The elements in a **``NumPy array``** are all required to be of ``the same data type``, and thus will be the ``same size in memory``. The exception: one can have arrays of (Python, including NumPy) ...

"- The elements in a **``NumPy array``** are all required to be of ``the same data type``, and thus will be the ``same size in memory``. The exception: one can have arrays of (Python, including NumPy) ...