This code creates a dictionary `d` that groups phone numbers...

March 28, 2023 at 08:00 PM

phone_numbers = ['+71234567890', '+71234567854', '+61234576890', '+52134567890', '+21235777890', '+21234567110', '+71232267890'] d = {} for number in numbers: code = number[:2] d.setdefault(code, []).append(number) print(*sorted(d.items()))

This code creates a dictionary d that groups phone numbers by their country code.

First, it defines a list of phone numbers called phone_numbers.

Next, it initializes an empty dictionary d.

Then, it loops through each phone number in the phone_numbers list. For each number, it extracts the first two characters (i.e. the country code) and assigns it to the variable code.

It then adds the phone number to the dictionary d using setdefault, which retrieves the value for the key code. If the key does not exist, it sets the default value as an empty list []. It then appends the phone number to the list associated with the key code.

Finally, it sorts the items in the dictionary in ascending order by their keys (i.e. the country codes), and prints them out separated by spaces.

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