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Tuples are similar to lists.
Tuples use (parentheses) while lists use [square brackets].
The big difference is that tuples are immutable. This means that after you create the tuple, you can’t change one individual value.
Example that works with lists, but not with tuples:
my_list = [42, 3.14, 2.718] #reassign item 2: works with lists my_list[2] = 100 my_tuple = (42, 3.14, 2.718) #this command isn't allowed for a tuple my_tuple[2] = 100
If you want to change part of a tuple, you need to recreate the whole thing:
#create the tuple again with the new value my_tuple = (42, 3.14, 100)
Other than being immutable, tuples work like lists. They can be sliced, looped through, and so on. Sometimes it doesn’t matter whether you use a loop or a tuple, but in other cases a Python function only works if the input is a tuple.