Getting the First Match From a Python List or Iterable

At some point in your Python journey, you may need to find the first item that matches a certain criterion in a Python iterable, such as a list or dictionary.

The simplest case is that you need to confirm that a particular item exists in the iterable. For example, you want to find a name in a list of names or a substring inside a string. In these cases, you’re best off using the in operator. However, there are many use cases when you may want to look for items with specific properties. For instance, you may need to:

  • Find a non-zero value in a list of numbers
  • Find a name of a particular length in a list of strings
  • Find and modify a dictionary in a list of dictionaries based on a certain attribute

In this video course, you’ll explore how best to approach all three scenarios.

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About Darren Jones

Darren Jones Darren Jones

With 20 years as a teacher of music technology, Darren is keen to bring his skills to the Python table.

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