Lambda function (also known as an anonymous function) is a concise way to define small, single-expression functions, often used in conjunction with higher-order functions like map(), filter(), and sorted().
lambda arguments: expression
lambda: Keyword to define a lambda function.arguments: Comma-separated list of arguments the function can accept (can be zero or more).expression: The single expression that represents the function's body. This expression is evaluated and returned when the function is called.
Add 10 to an argument
add_ten = lambda a: a + 10
print(add_ten(5)) # Output: 15
Multiply two arguments
multiply = lambda a, b: a * b
print(multiply(5, 6)) # Output: 30
Sum three arguments
summarize = lambda a, b, c: a + b + c
print(summarize(5, 6, 2)) # Output: 13
Simple, Short Operations: When you need a small, one-line function for a quick task.Higher-Order Functions: Lambda functions are often used as arguments to higher-order functions that take functions as inputs or return functions as outputs.Readability (Sometimes): In certain cases, lambda functions can improve code readability by keeping small logic snippets concise. However, this can be subjective and depends on the complexity of the expression.
Complex Logic: If the logic you want to implement is complex and requires multiple lines or statements, using a regular def function is generally better for readability and maintainability.Overuse: Don't overuse lambda functions for the sake of brevity, as it can make code harder to understand. Use them judiciously when they genuinely enhance readability.