Python Day-11 Using Return Statements in Lambda Functions

In this video, we dive into the concept of Lambda Functions in Python, specifically focusing on how they inherently return values without requiring an explicit return statement. Lambda functions, also known as anonymous functions, are a powerful tool for writing concise and efficient code.
We’ll explore:
✅ Why return statements are unnecessary in lambda functions.
✅ Practical examples showcasing lambda functions in real-world scenarios.
✅ The syntax and use cases of lambda functions in Python.
By the end of this video, you’ll have a clear understanding of how lambda functions streamline your Python code and where they are most effective.
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Examples Covered in the Video:
1. Lambda Function Returning a Value
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A lambda function for adding two numbers
add = lambda x, y: x + y
Result is returned implicitly
print(add(5, 3)) # Output: 8
2. Lambda Function with Conditional Logic
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Lambda function to check if a number is even
is_even = lambda x: "Even" if x % 2 == 0 else "Odd"
Result is returned directly
print(is_even(4)) # Output: Even
3. Lambda Function in a Higher-Order Function (map)
Using lambda with map to double the numbers
numbers = [1, 2, 3, 4, 5]
doubled = list(map(lambda x: x * 2, numbers))
Output is returned as a new list
print(doubled) # Output: [2, 4, 6, 8, 10]
4. Sorting with Lambda Function
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Lambda function to sort by the second element in a tuple
pairs = [(1, 3), (4, 1), (2, 2)]
pairs.sort(key=lambda x: x[1])
Resulting sorted list
print(pairs) # Output: [(4, 1), (2, 2), (1, 3)]