Lambda function in Python

A lambda function in Python is a small anonymous function that begins with the lambda keyword followed by a comma-separated parameter list, a colon (:) and an expression.

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A lambda implicitly returns its expression’s value. So any simple function of the form

def function_name(parameter_list):
    return expression

may be expressed as a more concise lambda of the form

lambda parameter_list: expression

For example, consider the following lambda function:

multiply = lambda x, y: x * y
result = multiply(3, 4)
print(result)  # Output: 12

This lambda function takes two arguments x and y and returns their product. We can call this lambda function like any other function.