Sample codes in Python

a=int(input("Enter first Number"))
b=int(input("Enter second Number"))
c=int(input("Enter third Number"))
sum=a+b+c
print(sum)

 m=int(input("Enter your marks"))
if(m>=90):
    print("You have Passed with First Distinction")

else:
    if(m>=60):
        print("You have passed with Second Distinction")
    else:
        if(m>=35):
            print("You have just passed work hard next time")
        else:
            print("Failed")

def my_binary(n):
    i=''
    while n>1:
        a = n%2
        n = n//2
        i=str(a)+i
    i=  str(n%2) +i   
    print (i)
    
a=my_binary(156) 

x=float(input("input number "))
y=int(x+0.5)
print(y)

1. Positive, Negative, or Zero Check

Demonstrates multi-way decision logic using an if-elif-else ladder to evaluate numerical state.

# Program to check if a number is positive, negative, or zero
num = float(input("Enter a number: "))

if num > 0:
    print("The number is Positive.")
elif num < 0:
    print("The number is Negative.")
else:
    print("The number is Zero.")

2. Print Even Numbers (1 to 20)

Combines a for loop with a modulo (%) conditional check to filter even numbers.

# Program to print all even numbers from 1 to 20
print("Even numbers between 1 and 20:")

for i in range(1, 21):
    if i % 2 == 0:
        print(i, end=" ")

3. Vowel or Consonant Checker

Uses membership evaluation (in) and string validation methods to route inputs safely.

# Program to check whether a letter is a vowel or consonant
char = input("Enter a single letter: ").lower()

if len(char) == 1 and char.isalpha():
    if char in 'aeiou':
        print(f"'{char}' is a Vowel.")
    else:
        print(f"'{char}' is a Consonant.")
else:
    print("Invalid input! Please enter a single alphabetic character.")

4. Find the Largest of Three Numbers

Demonstrates compound logical statements using the and operator to validate conditions.

# Program to find the largest among three numbers
num1 = float(input("Enter first number: "))
num2 = float(input("Enter second number: "))
num3 = float(input("Enter third number: "))

if num1 >= num2 and num1 >= num3:
    largest = num1
elif num2 >= num1 and num2 >= num3:
    largest = num2
else:
    largest = num3

print(f"The largest number is: {largest}")

5. Multiplication Table Generator

Uses a standard for loop with formatted strings to generate structured outputs.

# Program to generate multiplication table for a given number
num = int(input("Enter a number for the multiplication table: "))

print(f"\nMultiplication Table for {num}:")
for i in range(1, 11):
    print(f"{num} x {i} = {num * i}")

6. Count Vowels in a Sentence

Iterates through string characters and increments a counter variable when conditions match.

# Program to count total vowels in a sentence
text = input("Enter a sentence: ")
vowel_count = 0

for char in text.lower():
    if char in 'aeiou':
        vowel_count += 1

print(f"Total number of vowels: {vowel_count}")

7. Leap Year Checker

Illustrates complex boundary evaluation using precedence with and & or operators.

# Program to check if a year is a leap year
year = int(input("Enter a year: "))

if (year % 4 == 0 and year % 100 != 0) or (year % 400 == 0):
    print(f"{year} is a Leap Year.")
else:
    print(f"{year} is NOT a Leap Year.")

8. Sum of N Natural Numbers

Demonstrates accumulation logic inside a loop construct over a designated range.

# Program to calculate sum of numbers from 1 to N
n = int(input("Enter a positive integer N: "))
total = 0

for i in range(1, n + 1):
    total += i

print(f"The sum of numbers from 1 to {n} is: {total}")

PageSpeed Insights (PSI)

import urllib.request, json
key='YOUR_API_KEY' # Use your API key here 

x = "https://www.googleapis.com/pagespeedonline/v5/runPagespeed?url="
x= x + 'https://www.plus2net.com/python/pdf-grid.php'
x= x + '&strategy=desktop' # other value is mobile 
x= x + '&locale=en'
x= x + '&key='+key

response = urllib.request.urlopen(x)
data = json.loads(response.read()) # get the return Json data 
score = data["lighthouseResult"]["categories"]["performance"]["score"]
print(score) 

• FCP (First Contentful Paint): The time it takes for the first piece of content to appear on the screen.
• LCP (Largest Contentful Paint): Measures the loading performance of the largest content element visible in the viewport.
• CLS (Cumulative Layout Shift): Evaluates the visual stability by measuring unexpected layout shifts during the page load.
• INP (Interaction to Next Paint): Measures the responsiveness by evaluating the time from user interaction to the next frame painted.

fcp = data["loadingExperience"]["metrics"]["FIRST_CONTENTFUL_PAINT_MS"]["percentile"] 
fid = data["loadingExperience"]["metrics"]["FIRST_INPUT_DELAY_MS"]["percentile"]
lcp = data["loadingExperience"]["metrics"]["LARGEST_CONTENTFUL_PAINT_MS"]["percentile"]
cls = data["loadingExperience"]["metrics"]["CUMULATIVE_LAYOUT_SHIFT_SCORE"]["percentile"]/100

print('fcp:',fcp,'fid: ',fid,'lcp:',lcp,'cls:',cls) 

Subhendu Mohapatra

Author

🎥 Join me live on YouTube

Passionate about coding and teaching, I publish practical tutorials on PHP, Python, JavaScript, SQL, and web development. My goal is to make learning simple, engaging, and project‑oriented with real examples and source code.

← Subscribe to our YouTube Channel here