What are some examples of lambda functions in Python?

What are some examples of lambda functions in Python?

Lambda functions in Python are small anonymous functions defined with the keyword 'lambda'. They can take any number of arguments but can only have one expression. For example, you can use a lambda function to add two numbers: add = lambda x, y: x + y.

Can you give me more examples of how to use lambda functions?

Sure! Here are a few more examples:

1. Squaring a number: square = lambda x: x ** 2
2. Filtering even numbers from a list: even_numbers = list(filter(lambda x: x % 2 == 0, [1, 2, 3, 4, 5]))
3. Sorting a list of tuples by the second element: sorted_list = sorted([(1, 'one'), (2, 'two'), (3, 'three')], key=lambda x: x[1]).

What are the advantages of using lambda functions?

Lambda functions are concise and can be defined in a single line, making your code cleaner. They are often used for short functions that are not reused elsewhere, especially in functional programming contexts like map(), filter(), and reduce().

Are there any limitations to using lambda functions?

Yes, lambda functions can only contain a single expression, which limits their complexity. They also lack a name, making debugging harder. For more complex functions, it's better to use the def keyword.