Write a program to append the text "This is an additional line." to an existing file.

 with open("output.txt", "a") as file:    file.write("This is an additional line.\n")print("Text appended successfully!")#source code --> clcoding.com  Code Explanation:Open the File in Append Mode ("a")The open("output.txt",...

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Read a file line by line and print each line separately.

 with open("example.txt", "r") as file:    for line in file:        print(line.strip())  #source code --> clcoding.com         Code Explanation:Open the File in Read Mode...

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Create a program that writes a list of strings to a file, each on a new line.

 lines = ["Hello, World!", "Python is great!", "File handling is useful!", "End of file."]with open("output.txt", "w") as file:    for line in lines:        file.write(line + "\n")print("Data written to output.txt...

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Write a program to read the contents of a file and display them on the screen.

 with open("example.txt", "r") as file:    content = file.read()print("File Contents:")print(content)#source code --> clcoding.com  Code explanation:Opening the File:We use open("example.txt", "r") to open the file...

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Write a Python program to create a text file named example.txt and write the text "Hello, World!" into it.

 with open("example.txt", "w") as file:    file.write("Hello, World!")print("File created and text written successfully!")#source code --> clcoding.com  Code Explanation:Opening the File:We use open("example.txt",...

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Write a program to remove duplicates from a list using a set.

 numbers = [1, 2, 2, 3, 4, 4, 5, 6, 6, 7, 8, 8, 9]unique_numbers = list(set(numbers))print("List without duplicates:", unique_numbers)#source code --> clcoding.com  Code Explanation:Define a List with Duplicatesnumbers = [1,...

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Write a program to print all keys and values of a dictionary using a loop

 student = {"name": "John", "age": 20, "grade": "A"}for key, value in student.items():    print(f"Key: {key}, Value: {value}")#source code --> clcoding.com  Code Explanation:Define the Dictionarystudent = {"name":...

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Write a function that checks whether a given key exists in a dictionary.

 def key_exists(dictionary, key):    if key in dictionary:        return True    else:        return Falsestudent = {"name": "John", "age": 20, "grade": "A"}key_to_check = "age"if...

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Given a dictionary student = {"name": "John", "age": 20, "grade": "A"}, print the value of "age".

 student = {"name": "John", "age": 20, "grade": "A"}print(student["age"])#source code --> clcoding.com  Code Explanation:Creating the Dictionarystudent = {"name": "John", "age": 20, "grade": "A"}A dictionary named student...

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Create a dictionary to store student details like name, age, and grade. Print the dictionary.

 student = {    "name": "Alice",    "age": 20,    "grade": "A"}print("Student Details:", student)#source code --> clcoding.com  Code Explanation:Step 1: Creating a Dictionarystudent = { ...

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Write a Python program that takes an integer as input and checks if it is NOT an even number.

 num = int(input("Enter a number: "))if not (num % 2 == 0):      print("The number is NOT even (it is odd).")else:    print("The number is even.")#source code --> clcoding.com Code Explanation:Taking...

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Python Coding Challange - Question With Answer(01270225)

 Step-by-Step ExecutionThe outer loop (i) runs from 0 to 1 (i.e., range(0, 2) generates [0, 1]).Inside the outer loop, the inner loop (j) also runs from 0 to 1 (i.e., range(0, 2) generates [0,...

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Write a Python program that takes a person's age as input and checks if they are NOT eligible to vote (less than 18 years old).

 age = int(input("Enter your age: "))if not (age >= 18):    print("You are NOT eligible to vote.")else:    print("You are eligible to vote.")#source code --> clcoding.com Code Explanation:Taking Input from...

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Write a Python program that takes a number as input and checks if it is NOT a prime number.

 num = int(input("Enter a number: "))if num < 2 or any(num % i == 0 for i in range(2, int(num ** 0.5) + 1)):    print("The number is NOT a prime number.")else:    print("The number is a prime number.")#source code...

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Write a Python program that takes a year as input and checks if it is NOT a leap year.

 year = int(input("Enter a year: "))if not ((year % 4 == 0 and year % 100 != 0) or (year % 400 == 0)):    print("The year is NOT a leap year.")else:    print("The year is a leap year.")#source code --> clcoding.com Code...

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Write a Python program that takes two numbers as input and checks if the first number is NOT greater than or equal to the second number.

 num1 = float(input("Enter the first number: "))num2 = float(input("Enter the second number: "))if not (num1 >= num2):    print("The first number is NOT greater than or equal to the second number.")else:    print("The...

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Write a Python program that takes a number as input and prints its multiplication table (up to 10) using a for loop.

 num = int(input("Enter a number: "))# Print multiplication tableprint(f"Multiplication Table of {num}:")for i in range(1, 11):    print(f"{num} x {i} = {num * i}")#source code --> clcoding.com Code Explanation:Take User...

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Write a Python program that asks the user for a number n and calculates the sum of all numbers from 1 to n using a while loop.

 n = int(input("Enter a number: "))sum_numbers = 0i = 1while i <= n:    sum_numbers += i    i += 1print(f"The sum of numbers from 1 to {n} is {sum_numbers}")#source code --> clcoding.com Code Explanation:Take...

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Write a Python program that takes a string as input and prints it in reverse order using a for loop.

 text = input("Enter a string: ")reversed_text = ""for char in text:    reversed_text = char + reversed_textprint(f"Reversed string: {reversed_text}")#source code --> clcoding.com Code Explanation:Take User Input:text...

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.Write a Python program that takes 10 numbers as input from the user (using a for loop) and counts how many are even and how many are odd.

even_count = 0odd_count = 0for i in range(10):    num = int(input(f"Enter number {i+1}: "))        if num % 2 == 0:        even_count += 1    else:       ...

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Write a Python program that prints all even numbers from 1 to 100 using a for loop.

 print("Even numbers from 1 to 100:")for num in range(1, 101):    if num % 2 == 0:        if num <= 50:            print(num, end=" ")         ...

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Write a function multiply_by_two() that takes a number as input and prints its double.

 def multiply_by_two(number):    """This function takes a number and prints its double."""    result = number * 2      print("Double of", number, "is", result)  multiply_by_two(5)multiply_by_two(10)#source...

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Write a function calculate_area() that takes length and width as arguments and returns the area of a rectangle.

 def calculate_area(length, width):        area = length * width      return area result = calculate_area(5, 3)print("Area of the rectangle:", result)#source code --> clcoding.com Code...

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Write a function find_largest() that takes three numbers as arguments and returns the largest number.

 def find_largest(a, b, c):    """This function takes three numbers as arguments and returns the largest number."""    return max(a, b, c)  result = find_largest(10, 25, 8)print("The largest number is:", result)#source...

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Write a function print_even_numbers() that prints all even numbers from 1 to 20 using range().

 def print_even_numbers():    """This function prints all even numbers from 1 to 20."""    for num in range(2, 21, 2):          print(num, end=" ")  print_even_numbers()#source...

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Write a function count_vowels() that takes a string and returns the number of vowels (a, e, i, o, u).

 def count_vowels(string):    """This function counts the number of vowels (a, e, i, o, u) in a given string."""    vowels = "aeiouAEIOU"      count = 0      for char in string:   ...

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Write a function square_number(n) that returns the square of a number.

 def square_number(n):    return n * n print(square_number(5))  print(square_number(10)) #source code --> clcoding.com Code Explanation:Define the Function:def square_number(n): → This defines a function...

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Write a function reverse_string(s) that takes a string and returns the reversed version of it.

 def reverse_string(s):    return s[::-1] print(reverse_string("hello"))  print(reverse_string("Python")) print(reverse_string("12345"))  #source code --> clcoding.com Code Explanation:Define...

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Write a program that converts a given string to uppercase and lowercase using upper() and lower().

 text = input("Enter a string: ")uppercase_text = text.upper()lowercase_text = text.lower()print("Uppercase:", uppercase_text)print("Lowercase:", lowercase_text)#source code --> clcoding.com Code Explanation:Take user inputinput("Enter...

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Write a function that replaces all spaces in a string with underscores (_).

 def replace_spaces(s):    return s.replace(" ", "_")  print(replace_spaces("Hello World"))       print(replace_spaces("Python is fun"))     print(replace_spaces("NoSpacesHere")) ...

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Write a program that takes a name and age as input and prints a sentence using an f-string

 name = input("Enter your name: ")age = input("Enter your age: ")print(f"My name is {name} and I am {age} years old.")      #source code --> clcoding.com Code Explanation:Take user input for name and agename...

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Create a dictionary to store student details like name, age, and grade. Print the dictionary.

 details = {"name": "Alice", "age": 25, "grade": "A"}print("Dictionary Example:", details)#source code --> clcoding.com Code Explanation:Creating a Dictionary:details = {"name": "Alice", "age": 25, "grade": "A"}A dictionary named...

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Given a dictionary student = {"name": "John", "age": 20, "grade": "A"}, print the value of "age".

 student = {"name": "John", "age": 20, "grade": "A"}print("Age:", student["age"])#source code --> clcoding.com Code Explanation:Define the Dictionary:student = {"name": "John", "age": 20, "grade": "A"}A dictionary named student...

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Write a function that checks whether a given key exists in a dictionary.

 def key_exists(dictionary, key):    if key in dictionary:        return True    else:        return Falsestudent = {"name": "John", "age": 20, "grade": "A"}key_to_check = "age"if...

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Write a program to print all keys and values of a dictionary using a loop.

 student = {"name": "John", "age": 20, "grade": "A"}for key, value in student.items():    print(f"{key}: {value}")#source code --> clcoding.comCode Explanation: Define the Dictionary:student = {"name": "John", "age":...

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Write a program to remove duplicates from a list using a set.

 numbers = [1, 2, 3, 4, 5, 3, 2, 1, 6, 7, 8, 5]unique_numbers = list(set(numbers))print("List after removing duplicates:", unique_numbers)#source code --> clcoding.com Code Explanation:Define the List with Duplicates:numbers =...

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Write a Python program that takes two numbers as input and checks if the first number is completely divisible by the second number

 num1 = int(input("Enter the first number: "))num2 = int(input("Enter the second number: "))if num2 == 0:    print("Division by zero is not allowed.")elif num1 % num2 == 0:    print(f"{num1} is completely divisible...

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Write a program that takes a string as input and prints the first and last character of the string

 text = input("Enter a string: ")if len(text) > 0:    print("First character:", text[0])      print("Last character:", text[-1])  else:    print("The string is empty!")#source code -->...

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Write a function factorial(n) that returns the factorial of a number.

 def factorial(n):    if n == 0 or n == 1:        return 1     result = 1    for i in range(2, n + 1):          result *= i      return...

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Write a function sum_of_list(lst) that returns the sum of all elements in a list

 def sum_of_list(lst):    return sum(lst)  print(sum_of_list([1, 2, 3, 4, 5]))print(sum_of_list([10, 20, 30])) print(sum_of_list([-5, 5, 10])) #source code --> clcoding.com Code Explanation:Define...

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Write a function reverse_string(s) that returns the reversed string.

 def reverse_string(s):    return s[::-1] print(reverse_string("hello"))  print(reverse_string("Python"))  print(reverse_string("12345")) #source code --> clcoding.com Code Explanation:Define...

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Write a function is_even(n) that returns True if a number is even, otherwise False.

 def is_even(n):    return n % 2 == 0  print(is_even(8))  print(is_even(7)) print(is_even(0))  #source code --> clcoding.com Code Explanation:Define the Function:def is_even(n): → This...

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Write a Python program that takes two words as input and compares their lengths.

word1 = input("Enter the first word: ")word2 = input("Enter the second word: ")len1 = len(word1)len2 = len(word2)if len1 > len2:    print(f'"{word1}" is longer than "{word2}".')elif len1 < len2:    print(f'"{word2}"...

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Top 5 Skills You Must Know Before You Learn Python

 IntroductionPython is one of the most beginner-friendly programming languages, but having some foundational skills before diving in can make your learning journey smoother and more effective. Whether you're a complete beginner or transitioning...

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Write a Python program that takes a number as input and checks if it is between 50 and 100

 num = float(input("Enter a number: "))if 50 <= num <= 100:    print("The number is between 50 and 100.")else:    print("The number is NOT between 50 and 100.")#source code --> clcoding.com Code Explanation:Taking...

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