questions

Challenge 3/100: Date: Aug 5, 2024 (2024-08-05 16:37:42)

  1. use write method , create a text by using the faker library.

  2. find the lenght of the first line sentence.

  3. find the lengt of the second line sentence.

  4. read a text file , write it into line by line.

  5. read the text file(input.txt) write it into new text file (output.txt)

  6. what is the use of split method?

  7. difference between read and readlines.

  8. explain "+=" Addition Assignmen operators.

  9. give me a example fo this addition assignment operators.

  10. explain this "UnboundLocalError" error.

Challenge 5/100: Date: Aug 5, 2024

  1. explain the enumerate?

  2. give me the example code for the enumerate.

  3. explain the readlines.

  4. Why is "number + 1" used in the string formatting?

  5. What is the difference between opening a file in read mode 'r' and write mode 'w'?

  6. write the code to skip empty lines in the input file?

  7. explain the use of "a".

  8. give me example code for this "a" (append).

  9. Why does the code use the with statement for opening files?

  10. explain what the "add_index" function does. What are its inputs and outputs?

pymongo

  1. explain the difference between the mongodb and pymongo?

  2. explain the curl operation in pymongo/?

  3. How do you connect to a local MongoDB server using PyMongo?

  4. How do you insert a single document into a collection using PyMongo?

  5. How do you retrieve all documents from a collection using PyMongo?

  6. How do you update a document in a collection using PyMongo?

  7. How do you delete a document from a collection using PyMongo?

  8. How do you create an index on a collection using PyMongo?

  9. How do you perform a query with a filter to find documents in a collection?

  10. How do you handle exceptions when performing database operations with PyMongo?

  11. How do you use GridFS to store and retrieve large files?

  12. How do you implement pagination in PyMongo queries?

  13. How do you use the $in operator to find documents where a field matches any value in a list?

  14. How do you perform a text search in MongoDB using PyMongo?

  15. How do you use the $lookup stage in aggregation to perform a join-like operation?

  16. How do you handle database connection pooling with PyMongo?

  17. How do you use the $or operator to find documents that match at least one of multiple conditions?

  18. How do you perform a multi-key index creation for an array field?

  19. How do you use the $exists operator to find documents where a field is present or not present?

  20. How do you use the $addFields stage in aggregation to add new fields to documents?

class in python:

Basic Concepts

  1. What is a class in Python, and how do you define one?

  2. What is the difference between a class and an object?

  3. How do you create an instance of a class in Python?

  4. What is the purpose of the __init__ method in a class?

  5. What are instance attributes and how do you define them?

  6. What are class attributes and how do you define them?

  7. Explain the difference between instance methods, class methods, and static methods.

  8. What is the self keyword, and why is it used in class methods?

  9. How do you define a class method and a static method? Provide an example of each.

Inheritance and Polymorphism

  1. What is inheritance in Python, and how is it implemented?

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

  3. How do you call the parent class's constructor in a derived class?

  4. What is method overriding, and how do you implement it in Python?

  5. What is polymorphism, and how is it supported in Python?

  6. Explain the concept of duck typing in Python with an example.

Advanced Concepts

  1. What are magic methods (dunder methods) in Python, and why are they used?

  2. Give examples of commonly used magic methods and their purposes.

  3. What are properties in Python, and how do you define them using the property decorator?

  4. Explain the concept of __slots__ and its benefits.

  5. What are metaclasses in Python, and how do you use them?

Design Patterns and Best Practices

  1. What is the Singleton design pattern, and how do you implement it in Python?

  2. Explain the Factory design pattern with an example in Python.

  3. What is the Observer pattern, and how would you implement it using classes in Python?

  4. What are mixin classes, and how are they used in Python?

  5. What are abstract base classes (ABCs), and how do you define them in Python?

Practical Applications

  1. How do you serialize and deserialize a class object in Python?

  2. Explain the use of context managers in Python and how you can implement one using a class.

  3. How can you define custom exceptions in Python using classes?

  4. How do you test class-based code using the unittest module in Python?

  5. What are the pros and cons of using classes in Python?

  6. Write a Python class Rectangle with methods to calculate its area and perimeter.

  7. How would you implement a class BankAccount that supports deposit and withdrawal operations?

  8. Write a class Person with a method that prints "Hello, my name is <name>". The class should store the person's name as an instance attribute.

  9. How would you implement a class hierarchy for different types of vehicles (e.g., Vehicle, Car, Truck), ensuring that common functionality is shared?

  10. Implement a class Book with attributes title, author, and pages. Include a method to provide a string representation of the book details.

Mongodb

MongoDB-Specific Questions

  1. What is MongoDB, and how does it differ from traditional relational databases?

  2. Explain the key features of MongoDB.

  3. What is BSON, and how does it relate to JSON?

  4. How does MongoDB handle schema design and schema evolution?

  5. Describe the process of inserting and retrieving documents in MongoDB.

  6. What is a collection in MongoDB, and how does it differ from a table in a relational database?

  7. Explain the concept of indexing in MongoDB. Why is it important, and how do you create an index?

  8. What are MongoDB’s aggregation frameworks, and what are some common use cases?

  9. Discuss the advantages and disadvantages of horizontal scaling with sharding in MongoDB.

  10. What is a replica set in MongoDB, and how does it provide high availability?

CRUD Operations

  1. Write a Python script using pymongo to perform basic CRUD operations (Create, Read, Update, Delete) in MongoDB.

  2. How would you update a specific field in a document without altering other fields?

  3. Explain the difference between findOne() and find().

  4. How do you handle bulk inserts and updates in MongoDB?

Advanced Topics

  1. What is the difference between the WiredTiger and MMAPv1 storage engines in MongoDB?

  2. How does MongoDB handle transactions, and what are the limitations?

  3. Explain the concept of data consistency in MongoDB. How does MongoDB ensure data consistency in a sharded cluster?

  4. Describe a scenario where you would use MongoDB’s $lookup operation.

  5. How can you optimize the performance of MongoDB queries?

Data Modeling and Schema Design

  1. What are the best practices for designing schemas in MongoDB?

  2. How would you model a one-to-many relationship in MongoDB?

  3. What is denormalization, and when might you use it in MongoDB?

Security and Backup

  1. What are some security measures you can take to secure a MongoDB instance?

  2. How do you perform backup and restore operations in MongoDB?

  3. Explain the concept of MongoDB’s authentication and authorization mechanisms.

General Technical Questions

  1. How would you handle a situation where MongoDB is running out of disk space?

  2. Describe a situation where you had to troubleshoot performance issues in MongoDB.

  3. What tools or methods do you use for monitoring MongoDB performance?

Behavioral and Problem-Solving

  1. Describe a challenging project you worked on involving MongoDB and how you overcame the challenges.

  2. How do you approach learning new technologies or tools related to database management?

flask

Here are 30 interview questions related to Flask that cover a range of topics, from basic concepts to more advanced features:

Basic Concepts

  1. What is Flask and how does it differ from other web frameworks like Django?

  2. How do you set up a basic Flask application?

  3. Explain the purpose of the @app.route() decorator in Flask.

  4. How do you handle different HTTP methods (GET, POST) in Flask routes?

  5. What are Flask's request and response objects, and how do you use them?

Templates and Rendering

  1. What is Jinja2, and how does it integrate with Flask?

  2. How do you pass variables from a Flask route to a Jinja2 template?

  3. What is template inheritance in Jinja2, and how is it used in Flask applications?

  4. How do you handle form submissions in Flask, and what libraries can you use for form handling?

Database Integration

  1. What is SQLAlchemy, and how does it integrate with Flask?

  2. How do you define and use models in SQLAlchemy with Flask?

  3. How do you perform basic CRUD operations using Flask and SQLAlchemy?

  4. What are migrations, and how do you handle them with Flask-Migrate?

  5. How do you connect Flask to a NoSQL database like MongoDB?

Authentication and Authorization

  1. How do you implement user authentication in Flask?

  2. What is Flask-Login, and how is it used for session management?

  3. How do you implement role-based access control in Flask?

  4. Explain how you would integrate OAuth or social authentication in a Flask application.

Error Handling and Debugging

  1. How do you handle errors and exceptions in Flask applications?

  2. What is the purpose of custom error pages in Flask, and how do you create them?

  3. How do you use Flask's built-in development server for debugging?

  4. What are some common debugging tools or techniques for Flask applications?

APIs and Web Services

  1. How do you create a RESTful API using Flask?

  2. What libraries can you use to document APIs in Flask?

  3. How do you handle JSON requests and responses in Flask?

  4. What is Flask-RESTful, and how does it simplify API development?

Deployment and Configuration

  1. What are the common ways to deploy a Flask application?

  2. How do you configure Flask for different environments (development, testing, production)?

  3. What is the role of WSGI servers in deploying Flask applications, and which ones are commonly used?

  4. How do you manage environment variables and configuration settings in Flask?

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