What Is a Lambda Function?

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For the rest of this course, you’ll mostly see the term lambda function. The following terms may be used interchangeably depending on the programming language type and culture:

  • Anonymous functions
  • Lambda functions
  • Lambda expressions
  • Lambda abstractions
  • Lambda form
  • Function literals

Taken literally, an anonymous function is a function without a name. In Python, an anonymous function is created with the lambda keyword. More loosely, it may or not be assigned a name.

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