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Python map() and lambda() Use Cases and Examples

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 In Python, map() and lambda functions are often used together for functional programming. Here are some examples to illustrate how they work. Python map and lambda top use cases 1. Using map() with lambda The map() function applies a given function to all items in an iterable (like a list) and returns a map object (which can be converted to a list). Example: Doubling Numbers numbers = [ 1 , 2 , 3 , 4 , 5 ] doubled = list ( map ( lambda x: x * 2 , numbers)) print (doubled) # Output: [2, 4, 6, 8, 10] 2. Using map() to Convert Data Types Example: Converting Strings to Integers string_numbers = [ "1" , "2" , "3" , "4" , "5" ] integers = list ( map ( lambda x: int (x), string_numbers)) print (integers) # Output: [1, 2, 3, 4, 5] 3. Using map() with Multiple Iterables You can also use map() with more than one iterable. The lambda function can take multiple arguments. Example: Adding Two Lists Element-wise list1 = [ 1 , 2 , 3 ]
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The Perfect Way to Swap two Strings in Python

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Here is the perfect way swap two strings in python. Without a third variable, you can swap strings in Python. With the swap function, you can achieve this. Here's the sample logic.


swap two strings in python

Swap two strings

Multiple arguments you can use in the same function. Here, a and b are arguments for the swap function. You'll get output as swapped when you use the swap function.


def swap(a, b): 
return b,a 


Logic to swap strings.

i = "Hello world"
j = "This is ApplyBigAnalytics" 

(i, j) = swap(i, j) 

print(i) 
print(j) 


Logic to Swap two numbers.

i = 1 
j = 2 

(i, j) = swap(i,j) 

print(i) 
print(j)


Here is output

This is ApplyBigAnalytics 
Hello world 

2 

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