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What is Lambda Function?

An anonymous, single-expression function defined inline using the lambda keyword.

Lambda functions are small anonymous functions defined with the lambda keyword: lambda arguments: expression. They can have any number of arguments but only one expression.

Common uses include sorting keys (sorted(data, key=lambda x: x[1])), filtering (filter(lambda x: x > 0, numbers)), and callback functions. For complex logic, named functions are preferred.

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