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A lambda function in Python is a small, anonymous function that can take any number of arguments, but can only have one expression. Lambda functions are typically used for short, simple operations that can be defined in a single line of code.
Here's an example of a lambda function that squares its input:
In this example, we define a lambda function called square that takes one argument x and returns its square. We can then call this function like any other function:
Lambda functions can also be used as arguments to other functions, such as map(), filter(), and reduce(). Here's an example of using a lambda function with map() to square each value in a list:
In this example, we use map() to apply the lambda function to each value in the numbers list, resulting in a new list of squares.
Here's an example of a lambda function that squares its input:
Python:
square = lambda x: x ** 2In this example, we define a lambda function called square that takes one argument x and returns its square. We can then call this function like any other function:
Python:
print(square(5)) # output: 25Lambda functions can also be used as arguments to other functions, such as map(), filter(), and reduce(). Here's an example of using a lambda function with map() to square each value in a list:
Python:
numbers = [1, 2, 3, 4, 5]
squares = map(lambda x: x ** 2, numbers)
print(list(squares)) # output: [1, 4, 9, 16, 25]In this example, we use map() to apply the lambda function to each value in the numbers list, resulting in a new list of squares.
