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Commands Output
#display the digits of a number in a reverse order Enter a number 594
num=int(input("Enter a number ")) 495
while num>0:
r=num%10
print(r, end="")
num//=10
Program 11: To print the sum of first five natural numbers.
Algorithm
Step 1 Start
Step 2 num=1
Step 3 sum=0 Flowchart
START
Step 4 while num is less than 6
sum=sum + num
Sum=0, Num=1
num = num + 1
Step 5 Display "Sum is ", sum
Step 6 Stop Is No Display
Source Code: Num < 6? "Sum"
num=1 Yes
sum=0 Sum = Sum + Num STOP
while num<6:
sum=sum+num Num = Num + 1
num=num+1
print("The sum of first five natural numbers is",sum)
Output:
The sum of first five natural numbers is 15
Lists in Python
A list in Python is a collection of items that are ordered and mutable (changeable). It can contain elements of
different data types, such as strings, integers, floats, objects, or even other lists. Each value in a list is called an
element, and each element is indexed based on its position in the list. The index starts at 0 for the first element,
1 for the second element, and so on. The number of elements in a list determines its length. Lists are defined by
enclosing the elements within square brackets [], with each element separated by a comma. For example,
my_list = [1, 2, 3, 'hello', 5.0]
Lists are mutable, meaning that you can change the elements in a list after it has been created. You can add
elements to a list, modify existing elements, or remove elements from a list.
404 Touchpad Artificial Intelligence (Ver. 3.0)-IX

