Is there a size limit for a Python dictionary?

In Python, a dictionary (dict) is implemented as a hash table and does not have a fixed size limit, other than the constraints imposed by available memory and system architecture.

That is, you can add as many key-value pairs to the dictionary as your memory allows. However, with very large dictionaries, the performance of operations may decrease due to increased hashing time and possible collisions.

It is important to remember that keys must be hashable objects (e.g., strings, numbers, tuples of hashable elements), and values can be any objects.