map Size in Python 3.10

In Python 3.10, the __len__() method is available to return the number of key-value pairs in a hash (dict). The syntax to get the size of a hash in Python 3.10 is as follows:

len(hash)

Here is an example:

# create a hash
my_dict = {'a': 1, 'b': 2, 'c': 3}
# get the size of the hash

size = len(my_dict)
# print the size of the hash

print(f"The size of the hash is {size}")

The output will be:

The size of the hash is 3

In this example, we have created a hash (dict) called my_dict with 3 key-value pairs. The len() function is then used to get the size of the hash, which is 3. The size is stored in the size variable and printed to the console using print() function with an f-string.