Function ENUMERATE in Python (FOR Loops with Indexes) - Python Tutorial for Beginners

Pubblicato il: 04 marzo 2021
sul canale di: Digital Academy

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🖥️ Function ENUMERATE in Python (FOR Loops with Indexes)

You have seen how to iterate through strings, lists or any other iterable objects. But, you still don't have any idea: How to access and get their respective indexes?

You can use the range() function in for loops, to iterate through a sequence of numbers. Plus, it can also be combined with the len() function, to iterate through a sequence using indexing, as follows. This way, you can get the exact position of the current item, in the list.

colours = ['red', 'green', 'blue']

for index in range(len(colours)):
print(index, colours[index])

0 red
1 green
2 blue

That is Great! However, in most such cases, it is convenient to use the enumerate function, which results in the same output, but simplify the way you write your Python code. Indeed, the enumerate() function will provide a tuple that you can then unpack, in oder to get both the index and the value of the current item. Here is an example, with the exact same result.

colours = ['red', 'green', 'blue']

for index, value in enumerate(colours):
print(index, value)

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