Python Training in Kovilpatti

1. What is a list in Python, and how does it differ from an array in other programming languages?

2. What are some advantages and disadvantages of using lists in Python?

3. What is Slicing ?

4. Explain the concept of packing and unpacking with tuples in Python.

5. What happens if you try to modify an element in a tuple?

6. Can you nest tuples within lists and vice versa? Provide an example.

7. Why would you use a tuple instead of a list?

8. What is a tuple in Python, and how does it differ from a list?

Programming Questions:

1. Write a Python program to find the largest and smallest elements in a list.

2. Write a Python program to find the sum of all even numbers in a list.

3. Write a Python program to remove all occurrences of a specific element from a list.

4. Write a Python program to find the second largest element in a list.

5. Write a Python program to merge two lists and sort the resulting list.

6. Write a Python program to rotate a list by k positions to the left.

7. Write a Python program to check if a list is a palindrome.

8. Count the occurrences of an element in a tuple.

9. Write a Python program to find the index of an element in a tuple.

10. Write a Python program to check if an element exists in a tuple.

11. Write a Python program to unpack a tuple into several variables.

12. Write a Python program to count the number of occurrences of an element in a tuple.

13. Write a Python program to find the maximum and minimum elements in a tuple.

14. Write a Python program to convert a tuple into a list.

15. Write a Python program to swap the first and last elements of a tuple.

16. Write a Python program to find common elements between two tuples.

17. Write a Python program to find the length of a tuple.

18. Convert a tuple of strings to a single string.

19. Find the first and last elements of a tuple.

20. Count the number of even and odd numbers in a tuple.

1. What is a set in Python, and how does it differ from a list or tuple?

2. How do you create a set in Python?

3. What are some common operations that can be performed on sets?

4. Explain the difference between union and intersection operations on sets.

5. What is the difference between set.clear() and set.copy() methods?

6. Can sets contain other sets as their elements? Explain why or why not.

7. What is a dictionary in Python, and how does it differ from lists and tuples?

8. How can you access, add, and modify elements in a dictionary?

9. What is the difference between dict.get() and accessing a dictionary key directly?

10. How can you remove elements from a dictionary?

11. Can dictionary keys be of any data type in Python?

12. What is the purpose of the setdefault() method in a dictionary?

13. Explain the key characteristics of dictionaries in Python.

Programming Questions:

1. Write a Python program to find the symmetric difference between two sets.

2. Write a Python Program to return the union of all sets in a list.

3. Write a Python program to find the top n most frequent elements in a list using a dictionary.

4. Python program to find the sum of all items in a dictionary

5. Given two lists of equal length, one containing student names and the other containing their corresponding grades, write a function to create a dictionary where the student names are the keys and the grades are the values.

6. Given a list of names, write a function to count the frequency of each name and return the result as a dictionary.

7. Write a Python Program to find keys with the maximum value in a dictionary?

8. Create a dictionary where the values are squares of the keys.

9. Write a Python program to check if value 200 exists in the following dictionary.

Given:

sample_dict = {‘a’: 100, ‘b’: 200, ‘c’: 300}

10. Write a program that takes a list of elements and converts it into a set, removing any duplicates

1. What is a string in Python, and how is it represented?

2. How do you access individual characters in a string?

3. What does the str.upper() method do?

4. How does the str.split() method work, and what does it return?

5. What is the purpose of the str.strip() method?

6. Explain the difference between the format() method and f-strings in Python.

7. What is string concatenation, and how is it done in Python?

8. How do you repeat a string multiple times in Python?

9. What is the result of “Python” in “I love Python”?

10. How does string slicing work in Python?

11. What does the slice s[::2] do?

12. What does the str.replace(old, new) method do?

13. How do you check if a string starts with a specific prefix?

14. How can you convert a string to a list of characters?

Programming Questions:

1. Write a Python program that takes a string input from the user and prints the string in reverse.

2. Write a Python program that counts the number of vowels in a given string.

3. Write a Python program that formats a string to have each word capitalized.

4. Write a Python program that determines if a given string is a palindrome (reads the same forwards and backwards).

5. Write a Python program that finds the longest word in a given string.

6. Write a Python program that counts the occurrences of each character in a string and prints the result as a dictionary.

7. Write a Python program that extracts and prints all the unique words from a string.

1. What is the purpose of the if statement in Python?

2. Can an if statement have multiple conditions? How can this be achieved?

3. How does the if-elif-else statement work in Python?

4. What is the difference between elif and else in an if-elif-else construct?

5. Describe how a while loop works in Python.

6. What are some common use cases for a while loop?

7. How does a for loop differ from a while loop in Python?

8. What is the purpose of the range() function when used in a for loop?

9. What is the role of the break statement in loops?

10. Can the break statement be used in both for and while loops?

11. How does the continue statement affect loop execution?

12. How is the continue statement different from the break statement?

13. What is the purpose of the assert statement in Python?

14. What is the function of the pass statement in Python?

Programming Questions:

1. Write a Python program to check if a number is positive, negative, or zero.

2. Write a Python program to determine if a year is a leap year.

3. Write a Python program to calculate the sum of all numbers from 1 to n using a while loop.

4. Write a Python program to find the factorial of a number using a while loop.

5. Write a Python program to iterate over a list and print each element using a for loop.

6. Write a Python program to calculate the sum of all even numbers in a list using a for loop.

7. Write a Python program that reads numbers from a list and stops reading when it encounters a negative number.

8. Write a Python program to find the first prime number in a list of numbers and stop searching after finding it.

9. Write a Python program to skip printing numbers that are multiples of 3 in a range from 1 to 10 using a continue statement.

10. Write a Python program to iterate over a string and print only the vowels, using a continue statement.

11. Write a Python Program that uses assert to check if a given number is non-negative.

12. Write a Python Program that uses assert to verify that a list is not empty.

13. Write a Python program that uses the pass statement in a loop for a feature you plan to implement later.

Pattern Programs

1. Write a Python program to print the following right-angled triangle pattern of stars

*
**
***
****
*****

2. Write a Python program to print the following inverted right-angled triangle pattern of stars:

*****
****
***
**
*

3. Write a Python program to print the following pyramid pattern of stars:

*
***
*****
*******
*********

4. Write a Python program to print the following diamond pattern of stars:

*
***
*****
***
*

5. Write a Python program to print the following number pyramid pattern:

1
121
12321
1234321
123454321

6. Write a Python program to print the following hollow square pattern:

*****
* *
* *
* *
*****

7. Write a Python program to print Floyd’s triangle:

1
2 3
4 5 6
7 8 9 10

8. Write a Python program to print Pascal’s triangle:

1
1 1
1 2 1
1 3 3 1
1 4 6 4 1

9. Write a Python program to print the following right-angled triangle pattern with numbers:

1
12
123
1234

10. Write a Python program to print a square pattern of numbers, where each row contains the same number:

11111
22222
33333
44444
55555

 

1. What is a function in Python?

2. How do you define and call a function in Python?

3. What are the benefits of using functions in programming?

4. Explain the concept of function arguments and parameters.

5. What are default arguments in Python functions?

6. What is a variable-length argument in Python?

7. How can you return multiple values from a function in Python?

8. What is a lambda expression in Python?

9. How do you write a lambda function in Python?

10. How does a lambda function differ from a regular function?

11. Can you use lambda expressions in place of regular functions?

Programming Questions:

1. Write a function to check if a given number is prime

2. Write a function to calculate the factorial of a number using recursion.

3. Write a function that takes a string and returns the string reversed.

4. Write a function to merge two sorted lists into a single sorted list.

5. Write a function to find the nth Fibonacci number.

6. Write a function to count the number of occurrences of each character in a string.

1. What is a generator in Python, and how does it differ from a regular function?

2. How do you create a generator in Python?

3. What are the advantages of using generators over lists?

4. What is a generator expression, and how does it differ from a list comprehension?

5. How can you iterate over a generator expression?

6. Can you convert a generator expression to a list? If so, how?

7. What is a list comprehension in Python?

8. What are some advantages of using list comprehensions over traditional loops?

9. Explain the Difference between return and yield.

Programming Questions:

1. Write a generator function that yields the Fibonacci sequence up to n numbers.

2. Write a generator function that generates an infinite sequence of prime numbers.

3. Write a generator expression that yields the squares of numbers from 1 to 10.

4. Write a generator expression that filters and yields only the even numbers from a list of integers.

5. Write a list comprehension to create a list of the first 10 square numbers.

6. Write a list comprehension that extracts and converts all uppercase letters from a string to lowercase.

7. Write a list comprehension to generate a list of tuples where each tuple contains a number and its square, for numbers from 1 to 5.

8. Write a function that generates the first n even numbers using a generator expression and returns their sum.

1. How do you open a file in Python for reading and writing?

2. Why is it important to close a file after opening it?

3. What methods can be used to read the contents of a file in Python?

4. How can you read a file line by line using a for loop?

5. How do you write data to a file in Python?

6. What is the difference between write() and writelines() methods?

7. How do you handle file paths in Python?

8. How do you handle exceptions when working with files in Python?

9. What are the different file modes available in Python, and what do they do?

10. How can you read the entire content of a file in Python?

Programming Questions:

1. Write a Python program to read the contents of a file and print them to the console.

2. Write a Python program that reads a file named data.txt, appends the string “End of File” to the end of the file, and then writes the modified content to a new file named output.txt.

3. Write a Python program that counts the number of lines in a file named example.txt.

4. Write a Python program to create a file named numbers.txt and write numbers from 1 to 100, each on a new line.

5. Write a Python program that reads the content of a file named log.txt, adds a timestamp and a message “Log entry” to the end of the file, and then writes it back to log.txt.

6. Write a Python program that reads a file named students.txt, counts the occurrences of each student name, and writes the result to a new file named student_counts.txt.

7. Write a Python program that reads a file named text.txt and handles any I/O errors that might occur during reading.

1. What is Object-Oriented Programming (OOP)?

2. What are the four main principles of OOP?

3. What is a class in Python?

4. What is Object in Python?

5. What is the difference between class and an object?

6. What is inheritance, and why is it useful?

7. What is the difference between single inheritance and multiple inheritance?

8. What is method overriding in Python?

9. What is polymorphism in Python, and how is it achieved?

10. How does Python support polymorphism through duck typing?

11. What is abstraction in OOP, and why is it important?

12. How is abstraction implemented in Python?

13. What is a constructor in Python, and how is it used?

14. What is the difference between a class method and a static method in Python?

15. What is a magic method in Python, and can you give some examples?

16. How is encapsulation implemented in Python?

17. What is the purpose of access modifiers in OOP?

18. what is self?

Programming Questions:

1. Create a Python class called BankAccount that has attributes for the account holder’s name, account number, and balance. Implement methods for depositing and withdrawing money and displaying the account balance.

2. Create a Python program that defines a class hierarchy for different types of vehicles (e.g., Vehicle, Car, Motorcycle). Implement polymorphism by overriding methods in the subclasses.

3. Create an abstract class called Shape with an abstract method area(). Implement concrete subclasses Circle and Rectangle that calculate their respective areas.

4. Create a Python class called Student that encapsulates the student’s name and grade. Implement getter and setter methods for the grade attribute.

5. Create a Python class called Book that has attributes for the title, author, and publication year. Implement methods to display the book’s details and compare two books based on their publication year.

6. Create a Python class called Library that manages a collection of books. Implement methods to add a book, remove a book, and display all books.

7. Implement a class hierarchy with three levels: Vehicle as the base class, Car as a subclass of Vehicle, and ElectricCar as a subclass of Car. Implement methods to display information about the vehicle, car, and electric car.

8. Implement multiple inheritance by creating a class Person with attributes for name and age, and a class Employee with attributes for job_title and salary. Create a subclass Manager that inherits from both Person and Employee.

9. Implement a class Vector that represents a 2D vector. Overload the + operator to add two Vector objects and the __str__ method to print the vector in a readable format.

10. Implement an abstract base class Employee with an abstract method calculate_salary(). Create subclasses FullTimeEmployee and PartTimeEmployee that implement the calculate_salary() method.

1. What are the different types of errors in Python?

2. What are compile-time errors in Python, and how can they be fixed?

3. Provide examples of common syntax errors in Python.

4. What are runtime errors in Python, and how do they differ from syntax errors?

5. Provide examples of common runtime errors in Python.

6. What are logical errors, and why are they difficult to detect?

7. How can you detect and fix logical errors in a program?

8. What is an exception in Python, and how is it different from a syntax error?

9. List some built-in exceptions in Python.

10. How do you handle exceptions in Python?

11. What is the purpose of the else and finally blocks in exception handling?

12. How do you raise an exception in Python?

Programming Questions:

1. Write a program that prompts the user for two numbers and divides the first number by the second. Handle any potential exceptions such as division by zero and invalid input.

2. Define a custom exception class NegativeValueError that inherits from the built-in Exception class. Write a function that raises this custom exception if a negative number is passed.

3. Write a program that attempts to open and read a file. Handle both FileNotFoundError and IOError exceptions.

4. Write a program that demonstrates the use of the finally block by ensuring that a file is closed after attempting to write to it, regardless of whether an exception occurs.

5. Implement a function that checks whether a given age is valid (i.e., between 0 and 120). Raise an exception if the age is invalid.

1. What is a regular expression in Python and how is it used?

2. What are some common use cases for regular expressions in Python?

3. What are some basic regex patterns and their meanings?

4. What are metacharacters in regular expressions, and what is their purpose?

Programming Questions:

1. Write a Python program that finds all the dates in the format YYYY-MM-DD from a given string.

2. Write a Python program to extract all email addresses from a given text.

3. Write a Python program to validate and extract phone numbers in the format (123) 456-7890 from a string.

4. Write a Python program to replace all occurrences of the word “foo” with “bar” in a given string.

5. Write a Python program to extract the domain names from a list of URLs.

6. Write a Python program to extract all hashtags from a given tweet.

7. Write a Python program to find all occurrences of either “cat” or “dog” in a string.

8. Write a Python program to extract all URLs from a given text.

9. Validating a Strong Password

10. Write a Python program to extract all IP addresses from a given text. An IP address is in the format xxx.xxx.xxx.xxx, where each xxx is a number between 0 and 255.

1. What is a thread?

2. What is the Global Interpreter Lock (GIL) in Python?

3. How do you create and start a thread in Python?

4. What is the difference between a thread and a process?

5. What are thread synchronization and why is it important?

6. What are locks and how are they used in Python threading?

7. What is a thread pool and how is it used in Python?

8. What is the difference between threading.Thread and concurrent.futures.ThreadPoolExecutor?

9. What are some common pitfalls when using threads in Python?

10. What is the purpose of the threading.Condition class?

11. What is the difference between threading.Event and threading.Condition?

12. What is a race condition and how can you avoid it?

13. What are daemon threads in Python?

14. What are the benefits and limitations of using threads in Python?

Programming Questions:

1. Write a Python program that creates and starts a thread to print “Hello from thread!” five times.

2. Write a Python program that demonstrates the use of a lock to synchronize access to a shared counter variable. The program should create two threads that increment the counter 100 times each.

3. Write a Python program that creates a daemon thread that prints “Daemon thread running” every second. The main thread should terminate after 5 seconds.