What is a lambda function?
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A lambda function in Python is a small, anonymous function defined using the lambda keyword. It can have any number of arguments but only one expression. The result of that expression is automatically returned.
In this case, lambda x, y: x + y creates a function that takes two arguments and returns their sum. It's the same as writing:
Common Use Cases:
Lambda functions are often used with functions like map(), filter(), and sorted().
1. With map() – Apply a function to each item in a list:
filter() – Filter items based on a condition:sorted() – Sort using custom logic:Key Points:
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Lambda functions are anonymous (they don’t have a name unless you assign them to a variable).
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They are limited to a single expression—no statements like
if,for, orwhile. -
Best used for short, simple functions that are used only once or inline.
For complex logic, use a regular def function instead.
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