Python Tuples: An Introduction

Tuples are a fundamental data structure in Python that allow for the creation of immutable groups of objects. Once a tuple is created, its values cannot be modified, added, or removed. Tuples are created using parentheses instead of square brackets, similar to lists:

1	names = ("Roger", "Syd")

Just like lists, tuples are ordered, which means you can access their values using index values:

1 2	names[0] # "Roger" names[1] # "Syd"

You can also use the index() method to find the position of a value within a tuple:

1 2	names.index('Roger') # 0 names.index('Syd') # 1

Negative indexing can also be used to search from the end of the tuple:

1	names[-1] # "Syd"

The len() function can be used to count the number of items in a tuple:

1	len(names) # 2

To check if an item is contained within a tuple, you can use the in operator:

1	print("Roger" in names) # True

Slicing can be used to extract a portion of a tuple:

1 2	names[0:2] # ('Roger', 'Syd') names[1:] # ('Syd',)

The len() function can also be used to get the number of items in a tuple, just like we did with strings:

1	len(names) # 2

To create a sorted version of a tuple, you can use the sorted() function:

1	sorted(names)

New tuples can be created by concatenating existing tuples using the + operator:

1	newTuple = names + ("Vanille", "Tina")

tags: [“Python”, “tuples”, “data structure”, “immutable”, “indexing”, “slicing”]