RAMAKAYAL COMPUTER EDUCATION

Tag: Programming Languages

  • Python – Functions Examples

    Example 1 : 

    # Define a function
def greet():
    print("Hello, World!")

# Call the function
greet()

    Output : 

    Hello, World!

    Example 2 : 

    # Define a function with parameters
def greet(name):
    print(f"Hello, {name}!")

# Call the function with an argument
greet("Alice")

    Output : 

    Hello, Alice!

    Example 3 : 

    # Define a function with two parameters
def add(a, b):
    return a + b

# Call the function with arguments
result = add(3, 4)
print(result)

    Output : 

    7

    Example 4 : 

    # Define a function that returns a value
def square(x):
    return x * x

# Call the function and store the result
result = square(5)
print(result)

    Output : 

    25

    Example 5 : 

    # Define a function that returns multiple values
def get_name_and_age():
    name = "Alice"
    age = 30
    return name, age

# Call the function and unpack the result
name, age = get_name_and_age()
print(name, age)

    Output : 

    Alice 30

    Example 6 : (Area of Circle using Functions)

    def areaofcircle(r):
    answer=3.14*r
    return answer

radius=int(input("Enter Radius Value"))
ans=areaofcircle(radius)
print ("Answer",ans)

    Output : 

    Enter Radius Value 1
Answer 3.14

    Example 7 : 

    def welcome(myname):
    msg="Hi " +myname + " Welcome to My Centre"
    return msg;

    
m=input("Enter Your Name : ")
print(welcome(m))

    Output : 

    Enter Your Name : Raj
Hi Raj Welcome to My Centre

  • Python – Syntax of If, For, While, Break, Continue

    1. If Statement

    if condition:
    # Code to execute if the condition is True

    if 5 > 3:
    print("5 is greater than 3")

    2. if-else Statement

    if condition:
    # Code to execute if the condition is True
else:
    # Code to execute if the condition is False
    if 3 > 5:
    print("3 is greater than 5")
else:
    print("3 is not greater than 5")

    3. if-elif-else Statement

    if condition1:
    # Code to execute if condition1 is True
elif condition2:
    # Code to execute if condition2 is True
else:
    # Code to execute if both conditions are False
    x = 10
if x > 10:
    print("x is greater than 10")
elif x == 10:
    print("x is equal to 10")
else:
    print("x is less than 10")

    4.for Loop

    for variable in sequence:
    # Code to execute in each iteration
    for i in range(5):
    print(i)

    5.while Loop

    while condition:
# Code to execute as long as the condition is True
    i = 0
while i < 5:
    print(i)
    i += 1

    6.break Statement

    for/while variable in sequence/condition:
    if condition:
        break  # Exit the loop
    for i in range(10):
    if i == 5:
        break
    print(i)

    7. continue Statement

    for/while variable in sequence/condition:
    if condition:
        continue  # Skip the rest of the code in this iteration
    # Code to execute if the condition is not met
    for i in range(5):
    if i == 2:
        continue
    print(i)

    8. else with Loops

    for/while variable in sequence/condition:
    # Code to execute in each iteration
else:
    # Code to execute after the loop finishes
    for i in range(3):
    print(i)
else:
    print("Loop finished!")

  • Python – For Loop Examples

    Example 1 
    mycity=["Kalugumalai","Chennai","Madurai"]

for citynames in mycity:
        print (citynames)
        print ("hi")
    Output:
======
Kalugumalai
hi
Chennai
hi
Madurai
hi
    Example 2
    mynumbers=[1,2,3,4,5]

for n in mynumbers:
        print (n)
    Output:
======
1
2
3
4
5
    Example.3
    mynumbers=[2,4,6,8,10]

for n in mynumbers:
        print (n-1)
    output:
1
3
5
7
9
    Example 4: To Prints the numbers from 1 to 5
    for i in range(1, 6):
    print(i)

    Output : 

    1
2
3
4
5
    Example 4 : To Prints charactors
    # Define a string
word = "Hello"

# Start the for loop
for char in word:
    print(char)

    Output : 

    H
e
l
l
o
    Example 5 : Printing the Elements of a List
    colors = ["red", "green", "blue"]

for color in colors:
    print(color)

    Output : 

    red
green
blue
    Example 6 : To Sum the Numbers in a List
    numbers = [1, 2, 3, 4, 5]

total = 0

for number in numbers:
    total = total + number 

print("Total sum:", total)

    Output : 

    Total sum: 15
    Example 7:to Print Multiplication Table
    # Define the number for which to print the multiplication table
number = 7

# Start the for loop
for i in range(1, 11):
    print(f"{number} x {i} = {number * i}")

    Output : 

    7 x 1 = 7
7 x 2 = 14
7 x 3 = 21
...
7 x 10 = 70
    Example 8: To Print Odd Numbers Only
    mynumbers=[1,2,3,4,5,6,7,8,9,10]

for n in mynumbers:
    if(n%2=1)
        print (n)
    Output : 
1
3
5
7
9
    Example 9 : To Print Even Numbers from 1 to 100
    for n in range(1,101):
    if(n%2=0)
        print (n)
    Output :
2
4
6
.
.
.100
    Example 10 :
    mytable=2
for i in range(1,10):
     print(f"{i}  x  {mytable}  = {mytable* i}")
    Output : 
1  x  2  = 2
2  x  2  = 4
3  x  2  = 6
4  x  2  = 8
5  x  2  = 10
6  x  2  = 12
7  x  2  = 14
8  x  2  = 16
9  x  2  = 18

  • Python – While Loop Examples

    Example 1 : Counting from 1 to 5

    count = 1

while count <= 5:
    print(count)
    count = count+1

    Output : 

    1
2
3
4
5

    Example 2 : Sum of Numbers from 1 to 10

    

count = 1
    total_sum = 0

    while count <= 10:
        total_sum = total_sum + count  
        count =count +  1  

    print("The sum of numbers from 1 to 10 is:", total_sum)

    Output : 

    The sum of numbers from 1 to 10 is: 55

    Example 3: Asking for a Password

    correct_password = "root1234"

while True:
    password = input("Enter the password: ")
    if password == correct_password:
        print("Access granted!")
        break                                          
    else:
        print("Incorrect password, try again.")

    Output : 

    Enter the password: abc
Incorrect password, try again.

Enter the password: root1234
Access granted!

    Example 4: To Print Even Numbers Between 1 and 10

    number = 2

while number <= 10:
    print(number)
    number = number + 2

    Output : 

    2
4
6
8
10

    Example 5: ATM Withdrawal

    balance = 1000


while True:
    withdrawal = int(input("Enter amount to withdraw: "))
    
    if withdrawal > balance:
        print("Insufficient funds. Your balance is:", balance)
    else:
        balance -= withdrawal
        print("Withdrawal successful. New balance is:", balance)
        break

    Output : 

    Enter amount to withdraw: 1500
Insufficient funds. Your balance is: 1000
Enter amount to withdraw: 500
Withdrawal successful. New balance is: 500

    Example 6: Password Retry Limits

    correct_password = "securePass"
attempts_left = 3


while attempts_left > 0:
    password = input("Enter the password: ")
    
    if password == correct_password:
        print("Access granted!")
        break 
    else:
        attempts_left -= 1
        print("Incorrect password. Attempts left:", attempts_left)

if attempts_left == 0:
    print("Too many failed attempts. Access denied.")

    Output : 

    Enter the password: wrong1
Incorrect password. Attempts left: 2
Enter the password: wrong2
Incorrect password. Attempts left: 1
Enter the password: securePass
Access granted!

  • Importance of Machine Learning

    What is Machine Learning?
    Machine learning is a type of technology that enables the computer to learn from the data and make a decision or predict without explicitly being programmed for it. Simple words, teaching a computer to learn from examples and experiences.

    Why Learn Machine Learning?
    An Enticing Technology: Machine learning stands at the core of most cool technologies in use today, such as movie recommendations on Netflix and voice assistants like Siri.

    Future Jobs: Most of the future jobs will be based on machine learning. So, you can create a career in technology, health, and finance by learning now.

    Solving Problems: Machine learning resolves complicated problems by analyzing large data. It will find out the patterns and make decisions much faster and more accurately than human beings.

    Innovation: The art of being part of new technologies and improvements in old ones, which really make a difference in the world.

    Understanding of Modern Tech: Knowing the inner machinery of machine learning gives insight into how modern technology works and makes a living.

    Put simply; this is teaching a computer to learn from data. In this way, it opens many interesting opportunities and innovations that will be realized in the future.

    Examples :

    ConceptExample
    RecommendationNetflix
    Speech RecognitionSiri
    Spam FilteringGmail
    Image RecognitionGoogle Photos
    Predictive TextSmartphone
    Self-DrivingTesla
    Medical ImagingX-rays
    Fraud DetectionBanking
    PersonalizationAmazon
    Weather ForecastForecasting