Is it possible to implement a data structure that allocates a specified amount of memory cells upon creation?

Yes, in Python it is possible to implement a data structure that allocates a specified amount of memory upon creation.

For example, a list in Python is dynamic and can reallocate memory when adding elements. But if you need to allocate memory in advance for a fixed number of elements, you can use structures such as:

• An array from the array module — it is created with a fixed type and size.
• Arrays from the numpy library — allow creating fixed-size and fixed-type arrays.
• Lists with pre-filled values (for example, [None] * n), which allocate memory for n elements.

Example using an array from the array module:

import array

# Create an array of 10 integers initialized to zero
arr = array.array('i', [0]*10)
print(arr)

Thus, you can control memory allocation and the size of the data structure upon creation.