Python program to print all even numbers in a range

Given starting and end points, write a Python program to print all even numbers in that given range. 

Example:

Input: start = 4, end = 15
Output: 4, 6, 8, 10, 12, 14

Input: start = 8, end = 11
Output: 8, 10

Example #1: Print all even numbers from given list using for loop Define start and end limit of range. Iterate from start till the range in the list using for loop and check if num % 2 == 0. If the condition satisfies, then only print the number. 

Python3

for num in range(4,15,2):
  #here inside range function first no denotes starting, second denotes end and third denotes the interval
    print(num)

Output

4
6
8
10
12
14

Example #2: Taking range limit from user input 

Python3

# Python program to print Even Numbers in given range

start = int(input("Enter the start of range: "))
end = int(input("Enter the end of range: "))

# iterating each number in list
for num in range(start, end + 1):

    # checking condition
    if num % 2 == 0:
        print(num, end=" ")

Output:

Enter the start of range: 4
Enter the end of range: 10
4 6 8 10 

Example#3 Taking range limit user input and uses skip sequence number in range function which generates the all-even number. 

Python3

# Python program to print Even Numbers in given range

start = int(input("Enter the start of range: "))
end = int(input("Enter the end of range: "))

#creating even starting range
start = start+1 if start&1 else start


#create a list and printing element
#contains Even numbers in range
[ print( x ) for x in range(start, end + 1, 2)]

Output:

Enter the start of range: 4
Enter the end of range: 10
4 6 8 10 

Method: Using recursion

Python3

def even(num1,num2):
    if num1>num2:
        return
    print(num1,end=" ")
    return even(num1+2,num2)
num1=4;num2=15
even(num1,num2)

Output

4 6 8 10 12 14 

Method: Using the lambda function 

Python3

# Python code To print all even numbers
# in a given range using the lambda function
a=4;b=15
li=[]
for i in range(a,b+1):
    li.append(i)
# printing odd numbers using the lambda function
even_num = list(filter(lambda x: (x%2==0),li))
print(even_num)

Output

[4, 6, 8, 10, 12, 14]

Method: Using list comprehension 

Python3

x=[i for i in range(4,15+1) if i%2==0]
print(*x)

Output

4 6 8 10 12 14

Method: Using enumerate function 

Python3

a=4;b=15;l=[]
for i in range(a,b+1):
  l.append(i)
print([a for j,a in enumerate(l) if a%2==0])

Output

[4, 6, 8, 10, 12, 14]

Method: Using pass 

Python3

a=4;b=15
for i in range(a,b+1):
  if i%2!=0:
    pass
  else:
    print(i,end=" ")

Output

4 6 8 10 12 14 

Method: Using Numpy.Array

Python3

# Python code To print all even numbers
# in a given range using numpy array
import numpy as np

# Declaring Range
a=4;b=15
li= np.array(range(a, b+1))

# printing odd numbers using numpy array
even_num = li[li%2==0];
print(even_num)

Output:

[ 4  6  8 10 12 14]

Method: Using bitwise and operator

Python3

# Python program to print even Numbers in given range
#using bitwise & operator


start, end = 4, 19



# iterating each number in list

for num in range(start, end + 1):



    # checking condition

    if not (num & 1):

        print(num, end = " ")

#this code is contributed by vinay pinjala.

Output

4 6 8 10 12 14 16 18 

Time Complexity: O(n)
Auxiliary Space:O(1)