Python Programming with Raspberry Pi

Sets

A set (https://docs.python.org/3/tutorial/datastructures.html#sets) is an unordered collection of immutable elements without duplicate entries. A set could be created as follows:

    >>> my_set = set([1, 2, 3, 4, 5])    >>> my_set    {1, 2, 3, 4, 5}

Now, let's add a duplicate list to this set:

    >>> my_set.update([1, 2, 3, 4, 5])    >>> my_set    {1, 2, 3, 4, 5}

Sets enable avoid duplication of entries and saving the unique entries. A single element can be added to a set as follows:

    >>> my_set = set([1, 2, 3, 4, 5])    >>> my_set.add(6)    >>> my_set    {1, 2, 3, 4, 5, 6}

Sets are used to test memberships of an element among different sets. There are different methods that are related to membership tests. We recommend learning about each method using ...