Tuple in Python
In Python, a tuple is a built-in data structure that is similar to a list, but with one major difference: tuples are immutable, meaning that once a tuple is created, its contents cannot be modified. This makes tuples useful for storing fixed collections of data.
Tuples are defined using parentheses (), with each element separated by a comma. For example, we can create a tuple of integers like this:
my_tuple = (1, 2, 3, 4, 5)
We can also create a tuple of strings:
my_tuple = ('apple', 'banana', 'cherry')
We can access individual elements of a tuple using their index, just like with lists. However, because tuples are immutable, we cannot modify their contents:
first_element = my_tuple[0] # Access the first element my_tuple[1] = 'orange' # This will raise a TypeError!
We can add two tuples together using the + operator to create a new tuple:
my_tuple = (1, 2, 3) + (4, 5, 6)
We can also create a tuple with a single element by including a trailing comma after that element:
single_tuple = (1,)
Overall, tuples are useful when we want to store a fixed collection of data that will not be modified. They can also be used as dictionary keys or as elements in sets, because they are immutable.
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