initialcommit

Author: HashimThePassionate

19-LambdaFunction.py

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+#Python Lambda Functions
+'''
+Lambda Functions in Python are anonymous functions, 
+implying they don't have a name. The def keyword is needed to create 
+a typical function in Python, as we already know. We can also use 
+the "lambda" keyword in Python to define an unnamed function.
+
+Syntax of Python Lambda Function
+lambda arguments: expression 
+'''
+#Example1 
+# Code to demonstrate how we can use a lambda function  
+add = lambda num: num + 4  
+print( add(6) )  
+'''
+Output
+10
+'''
+#Example2
+def reciprocal( num ):  
+    return 1 / num  
+lambda_reciprocal = lambda num: 1 / num  
+print( "Lambda keyword: ", lambda_reciprocal(6) ) 
+print( "Def keyword: ", reciprocal(6) )  
+'''
+Output
+Def keyword:  0.16666666666666666
+Lambda keyword:  0.16666666666666666
+'''
+#Example3 Lambda Function with filter()
+# Code to filter odd numbers from a given list  
+list_ = [34, 12, 64, 55, 75, 13, 63]  
+odd_list = list(filter( lambda num: (num % 2 != 0) , list_ ))  
+print(odd_list)  
+'''
+Output
+[55, 75, 13, 63]
+'''
+#Example4 Lambda Function with map()
+#Code to calculate the square of each number of a list using the map() 
+# function    
+numbers_list = [2, 4, 5, 1, 3, 7, 8, 9, 10]    
+squared_list = list(map( lambda num: num ** 2 , numbers_list ))    
+print( squared_list ) 
+'''
+Output
+[4, 16, 25, 1, 9, 49, 64, 81, 100]
+'''
+
+#Example5 Lambda Function with List Comprehension and For Loop
+#Code to calculate square of each number of list using list comprehension  
+squares = [lambda num = num: num ** 2 for num in range(0, 11)]     
+for square in squares:  
+    print( square(), end = " ")  
+'''
+Output
+0 1 4 9 16 25 36 49 64 81 100 
+'''    
+
+#Example6 Lambda Function with if-else
+Minimum = lambda x, y : x if (x < y) else y     
+print(Minimum( 35, 74 )) 
+'''
+Output
+35
+'''