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 only have one expression. For example, you can use a lambda function to square a number: square = lambda x: x ** 2.

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

Sure! You can use lambda functions with the map() function to apply a function to all items in an iterable. For instance: list(map(lambda x: x + 1, [1, 2, 3])) will return [2, 3, 4].

What about using lambda functions with sorting?

Great question! You can use lambda functions as the key for sorting. For example, sorted([(1, 'one'), (2, 'two'), (3, 'three')], key=lambda x: x[1]) will sort the list of tuples by the second element, resulting in [(1, 'one'), (3, 'three'), (2, 'two')].

Are there any limitations to using lambda functions?

Yes, lambda functions can only contain a single expression, which limits their complexity. For more complex functions, it's better to define a regular function using def.