# What is a tuple? 

A **tuple** is an immutable list of Python objects which means it can not be changed in any way once it has been created. Unlike [sets](https://www.educative.io/answers/what-are-sets-in-python), tuples are an ordered collection.

Now let's take a look at an example of a tuple.

tupleExmp = ("alpha","bravo","charlie")
print(tupleExmp)

Once a tuple is created, items cannot be added or removed and their values cannot be changed. Changing the above tuple will generate an error.

tupleExmp = ("alpha","bravo","charlie")
tupleExmp[0] = "100" #changing the value at zeroth index

# Accessing tuple items

Tuple indexes are **zero-based**, just like a list, so the first element of a non-empty tuple is always `tuple[0]`.

**Negative** indexes count from the end of the tuple, just like a list.

tupleExmp = ("alpha","bravo","charlie")
print(tupleExmp[1])
print(tupleExmp[-1])

You can also *loop* through the tuple values using a `for` loop. 

tupleExmp = ("alpha","bravo","charlie")
for item in tupleExmp:
  print(item)

# Length of a tuple

The length of a tuple can be found using the `len()` function.

tupleExmp = ("alpha","bravo","charlie")
print(len(tupleExmp))

Tuples in Python

What is a tuple?

Creating a tuple

Accessing tuple items

Length of a tuple