Answers for "lambda expressions python"

lambda condition python

f = lambda parameter : exp1 if cond else exp2

# example
f = lambda x: "even" if x%2==0 else "odd"

python lambda

multiply = lambda x,y: x * y
multiply(21, 2) #42
#_____________
def myfunc(n):
  return lambda a : a * n

mydoubler = myfunc(2)
print(mydoubler(11)) #22

lambda python

nums = [1, 2, 3, 4, 5]


print(list(map(lambda n:n*n, nums)))
#lambda n : n in this case is the passed value

lambda and function in python

Table = lambda Table_of,Multiply_by: (Table_of*Multiply_by)
print("3 * 9 = ",Table(3,9))

def Concatinate(first_name, last_name):
    return first_name + " " + last_name
print("Concatinate using functions your name is:- {}".format(Concatinate("Harit","rai")))

lambda function in python

In Python, an anonymous function is a function that is defined without a name.

While normal functions are defined using the def keyword in Python, 
anonymous functions are defined using the lambda keyword.

Hence, anonymous functions are also called lambda functions.

# syntax of Lambda function
lambda arguments: expression

# Program to show the use of lambda functions
double = lambda x: x * 2

print(double(5))

# examples
my_list = range(101)

print(list(map(lambda item: item**2, my_list)))
print(list(filter(lambda item: item % 2 == 1, my_list)))
print(list(map(lambda item: item**2, my_list)))

a = [(0, 2), (4, 3), (9, 9), (10, -1)]

a.sort(key=lambda x: x[1])

print(a)

# docs lambda function
# the lambda function can be used as a function inside a function like the following


def make_incrementor(n):
    return lambda x: x + n


f = make_incrementor(12)
print(f(3))
print(f(13))

# you can use lambda as a key for sort or anything else
pairs = [(1, "one"), (2, "two"), (3, "three"), (4, "four")]
# what if you wanna sort the list by the second argument
pairs.sort(key=lambda x: x[1])
print(pairs)

lambda function in python

In Python, an anonymous function is a function that is defined without a name.

While normal functions are defined using the def keyword in Python, 
anonymous functions are defined using the lambda keyword.

Hence, anonymous functions are also called lambda functions.

# syntax of Lambda function
lambda arguments: expression

# Program to show the use of lambda functions
double = lambda x: x * 2

print(double(5))