Python

Differentiate Supervised and Unsupervised Learning

Supervised learning is that branch of learning wherein we have a dataset with some target value, i.e., some input-output pair is used to design a machine which thereby helps obtain output for future test cases after sufficient training. If the training set is divided into classes, then it is a classification problem while if the training set is continuous then is it regression problem.

In unsupervised learning, there is no output, i.e. the data provided does not target any value, but the property of the data itself is its characteristic feature and those properties help to design clusters thereby representing relationships between the data items.

Describe a KNN algorithm in detail.

A KNN is a supervised learning algorithm which makes predictions using the training dataset itself. Predictions are made for a new instance (x) by searching through the entire training set for the K at most similar instances and calculating the output variable for those K instances. For regression this relates to the mean output variable, in classification, it is the mode (or most common) class value.

The most popular distance is the Euclidean distance which determines the similarity in K instances.

This is calculated by taking the square root of the sum of the squared differences between a point which is new, let’s call it x and a point which was already there or is existing, let’s call it y, across all input attributes j.

What is web scraping and list the libraries used?

The technique which lets us extract data in very big or say large amount from different websites is called as Web scraping. The extracted data is saved in a local computer file or in a chosen database, the format is a table. This automates the process of copy-paste the data from the websites.

The most used Python Web scraping libraries are:

1. The Farm: Requests
2. The Stew: Beautiful Soup 4
3. The Salad: XML
4. The Restaurant: Selenium
5. The Chef: Scrappy

What are the advantages and disadvantages of Python language?

Advantages:

1. Python is easy to learn and its code is readable. The standard library makes a lot of complex functionalities to be executed with ease
2. Supports multiple systems and platforms.
3. Object Oriented Programming-driven.
4. With the introduction of Raspberry Pi, a card-sized microcomputer, Python has expanded its reach to unprecedented heights that lead to the development of cameras, radios, and games with ease. So, learning Python could help to create some out-of-the-box gadgets.
5. The frameworks make Web programming very flexible. The Django is the most famous Python framework for web development.
6. Gives rise to quick development by using less code. Even a small team can handle Python effectively.
7. Allows scaling even the most complex applications with ease.
8. Offers a built-in testing framework to set debugging time and enable fastest workflows.
9. Companies like Yahoo, Google, IBM, NASA, Nokia, and Disney prefer Python.

Disadvantages

1. Python is slow.
2. Python is not suitable for mobile development.
3. Python is not applicable for memory intensive tasks.
4. It is difficult to build a high-graphic 3D game using Python.
5. Has limitations with database access.
6. Python is not good for multiprocessor/multi-core work.

Define MRjob and its features.

MRjob is used to write Python programs that run on Hadoop. It has more documentation than any other framework or library, we are aware of. MRjob allows any programmers to run the code without Hadoop at all. Also, it keeps reducing code for one job in a single class. MRjob switch input and output functions with a single line of code.

Placement FAQ's

What is the salary of Python Programmers in India and US?

The US being a developed nation has a high value of work, and hence the salary ranges from around $44,000 to $221,000. While in India, a country still under its developing phase brings down the salary to Rupees 5 to 8 LPA, which equals $7,783 to $12,453 only.

The salary variation is not limited to the countries, but it’s also based on the job location within the country itself. Also, salary variation is highly dependent on the job profile, a freelancer is (most often) expected to earn more than some company employee, but then it comes with its down points, considering the available clients and requirements for freelancing.

What are the reasons that make Python, so popular in the market?

Python ranks second, according to the PYPL Popularity of Programming languages.

Following are the features which make it popular:

1. It uses the clean syntax; hence, the programs are easier to read (No missing semicolons)
2. The plethora of standard libraries included supporting several programming tasks like searching text along with systematic expressions, linking to Web servers, modifying and reading files.
3. The interactive mode of Python makes it simple to test code short snippets. It also comprises of a development environment known as IDLE.
4. The codes can be extended by appending new modules that are implemented in other compiled language like C++ or C.
5. In Python’s case, it’s Google, which uses the programming language in a number of applications.
6. Allows the developer to run the code anywhere, including Windows, Mac OS X, UNIX, and Linux.
7. It is free software in a couple of categories. It does not cost anything to use or download Python or to add it in the application.

What are the useful features of Python language?

1. Simple

   Python is a simple language. A python program connotes English, although very strict English!. This pseudo-code nature helps in the concept rather than the syntax of the language

2. Easy to Learn

   Python is extremely easy to get started with. Python has an extraordinarily simple syntax.

3. Free and Open Source

   Python is an example of a FLOSS i.e., you can freely distribute copies of this software, read its source code, make changes to it, use pieces of it in new free programs.

4. Portable

   Due to its open-source nature, Python is portable and architecturally neutral platforms. Python programs can be used on Linux, Windows, FreeBSD, Macintosh, Solaris, OS/2, Amiga, AROS, AS/400, BeOS, OS/390, z/OS, etc. without requiring any changes at all

5. Embeddable

   Python can be placed within the C/C++ code also. This allows the users to have 'scripting' capabilities.

6. Extensive Libraries

   The Python Standard Library can do various things involving regular expressions, documentation generation, unit testing, threading, GUI etc. called the 'Batteries Included' philosophy of Python.

Why there is a demand for Python programmers in the market?

There's a popular saying: "People pay a lot for convenience".

One can make things more often than not in C++/Java in around 60/100 lines of code, but in python, the code length itself reduces to 20 lines thereby reducing the pressure of code maintenance. Debugging Python is also really straightforward. The only implicit conversion it performs is between different kinds of number. Python also allows the structure with white spaces, thereby furnishing beautiful code and reducing the overhead of braces maintenance. Python also seems to have a larger community and more well-developed/useful libraries and tools. Hence, it is more efficient than other languages.

Why is Python popular among the developers in the world?

The one feature that really separates python from the others and makes it popular, is its use of white space to indicate structure because, at times, it gets very messy to maintain a structure, but Python helps produce a beautiful code. Also, the large community of Python encourages more developers to learn and grow. Apart from this, python is one of the highly paid languages these days and its demand is very high and thus the popularity.

What are the Prerequisites of Python Course?

1. Access to a computer
2. Literacy (preferably in English)
3. Some means to install Python (preferably Internet access)
4. Some access to reference and educational materials (preferably Internet access)

Willingness and perseverance

What are the system requirements to attend the live sessions?

1. Processor I3 with 4GB RAM, OS can be 32 or 64 bit (Laptop/Desktop)
2. Internet connection with Min 1 MBPS speed
3. Good quality headset
4. Power back up
5. You can also log in through your Android mobile phone/ Tablet with 4G internet connectivity

What if the trainee miss any session?

The trainee can watch the recorded video of all the sessions in the LMS or Trainee can attend the missed session in the upcoming batches.

What do the trainee get from the LMS?

The trainee will have the access to Recorded sessions, Assignments, Quizzes, Case Studies, few course documents posted by trainers, Placement related docs etc.

What is the validity of the LMS access? What if the LMS access is expired.

Trainee will get 1-year access to the LMS. You can contact our support team to extend the validity of the LMS.

Will the trainee get any project to work on with Python course?

Yes, of course! The trainee will get the project at the end of the course; you need to submit a project. Our trainers will assist you to complete the project.

How are the practicals done?

The trainee will get step by step assistance on VM installation from our expert trainers during the practical sessions, post live sessions, you can practice at your end and submit your queries if any to our support team support@bumacoglobal.com for further assistance.

What are the types of training we offer?

1. WBLT- Web-based live Training
2. WBVT- Web-based Video Training
3. One on One live training
4. Self-paced training
5. In class training [/accordion]

What are the benefits of online training ?

1. Flexible location
2. Flexible schedule
3. Travel free
4. Time saving
5. Cost saving
6. LMS access
7. You will never miss a class
8. Two-way interactive
9. Fast learning
10. Trainer support for 1 year [/accordion]

Who are our Trainers?

Our trainers are industry experts having 10 to 15 years of industry experience and 3-4 years of training experience. Most of the trainers are working professionals who teach the real time scenarios which will help the students to learn the courses in an effective manner.

Will the trainee get the certification post the course completion?

Yes, Trainee will get the participation certificate from CorpConsult upon successfully completing the course.

What if the trainee has more queries and need assistance?

Trainee can drop an email to support@bumacoglobal.com an automatic ticket will get generated. Our support team works 24/7 to assist you with all your queries.