Python enumerate(): Simplify Looping With Counters

Python enumerate(): Simplify Looping With Counters

Learn all about Python's built-in enumerate(), where it's used, and how you can emulate its behavior. In Python, a for loop is usually written as a loop over an iterable object. You can use Python’s enumerate() to get a counter and the value from the iterable at the same time! You’ll see how to: Use enumerate() to get a counter in a loop; Apply enumerate() to display item counts; Use enumerate() with conditional statements; Implement your own equivalent function to enumerate(); Unpack values returned by enumerate()

Once you learn about for loops in Python, you know that using an index to access items in a sequence isn't very Pythonic. So what do you do when you need that index value? In this tutorial, you'll learn all about Python's built-in enumerate(), where it's used, and how you can emulate its behavior.

In Python, a for loop is usually written as a loop over an iterable object. This means you don’t need a counting variable to access items in the iterable. Sometimes, though, you do want to have a variable that changes on each loop iteration. Rather than creating and incrementing a variable yourself, you can use Python’s enumerate() to get a counter and the value from the iterable at the same time!

In this tutorial, you’ll see how to:

  • Use enumerate() to get a counter in a loop
  • Apply enumerate() to display item counts
  • Use enumerate() with conditional statements
  • Implement your own equivalent function to enumerate()
  • Unpack values returned by enumerate()

Let’s get started!

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