Python programming questions and answers pdf

What is Python good for? Answer: Python is a high-level general-purpose programming language that can be applied to many different classes of problems. Name some of the features of Python? Answer: Following are some of the salient features of python It supports functional and structured programming methods as well as OOP. It can be used as a scripting language or can be compiled to byte-code for building large applications.

It provides very high-level dynamic data types and supports dynamic type checking. It supports automatic garbage collection. What Is Python? Answer: Python is one of the most successful interpreted languages. Few other interpreted languages are PHP and Javascript. Benefits Of Python Programming. Python supports object-orientated programming as you can define classes along with the composition and inheritance.

Functions in Python are like first-class objects. It suggests you can assign them to variables, return from other methods and pass as arguments. Developing using Python is quick but running it is often slower than compiled languages. Python has several usages like web-based applications, test automation, data modeling, big data analytics and much more. PEP 8. PEP 8 is the latest Python coding standard, a set of coding recommendations. It guides to deliver more readable Python code.

What are the Runtime Errors? Answer: The errors which occur after starting the execution of the programs are known as runtime errors. Runtime errors can occur because of 1 Invalid Input 2 Invalid Logic 3 memory issues 4 Hardware failures and so on With respect to every reason which causes to runtime error corresponding runtime error representation class is available Runtime error representation classes technically we call as an exception class.

While executing the program if any runtime error occurs corresponding runtime error representation class object is created Creating a runtime error representation class object is technically known as a rising exception While executing the program if an exception is raised, then internally python interpreter verify any code is implemented to handle the raised exception or not If code is not implemented to handle raised exception then the program will be terminated abnormally.

Mention what the Django templates consist of? Answer: The template is a simple text file. Explain the use of session in Django framework? Answer: Django provides a session that lets you store and retrieve data on a per-site-visitor basis. Django abstracts the process of sending and receiving cookies, by placing a session ID cookie on the client-side and storing all the related data on the server-side.

Is Python object-oriented? Python is Object Oriented Programming language. OOP is the programming paradigm based on classes and instances of those classes called objects.

Name few Python modules for Statistical, Numerical and scientific computations? Explain how to overload constructors or methods in Python? Explain how to redirect the output of a python script from standout ie.

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Answer: They are two possible ways of redirecting the output from standout to a file. Explain the shortest way to open a text file and display its contents?

How do you create a dictionary which can preserve the order of pairs? Python 2.Searching for Python developer job? Searching for python interview questions for the best performance at job interview? Python is a high level interpreted programming language for general purpose. Have a look at Python job interview questions and answers for the interview preparation.

Answer : Python is an interpreted, interactive, object-oriented programming language. It incorporates modules, exceptions, dynamic typing, very high level dynamic data types, and classes. Python combines remarkable power with very clear syntax.

It is also usable as an extension language for applications that need a programmable interface. Question 2. Answer : Yes. PyChecker is a static analysis tool that finds bugs in Python source code and warns about code complexity and style. Pylint is another tool that checks if a module satisfies a coding standard, and also makes it possible to write plug-ins to add a custom feature. Question 3. Answer : In Python, variables that are only referenced inside a function are implicitly global.

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If a variable is assigned a new value anywhere within the function's body, it's assumed to be a local. If a variable is ever assigned a new value inside the function, the variable is implicitly local, and you need to explicitly declare it as 'global'. Though a bit surprising at first, a moment's consideration explains this.

On one hand, requiring global for assigned variables provides a bar against unintended side-effects. On the other hand, if global was required for all global references, you'd be using global all the time.

You'd have to declare as global every reference to a builtin function or to a component of an imported module. This clutter would defeat the usefulness of the global declaration for identifying side-effects. Question 4. Answer : The canonical way to share information across modules within a single program is to create a special module often called config or cfg.

Just import the config module in all modules of your application; the module then becomes available as a global name. Because there is only one instance of each module, any changes made to the module object get reflected everywhere. For example: config. Question 5. Answer : In general, try copy. Not all objects can be copied, but most can. Some objects can be copied more easily. Question 6. Answer : For an instance x of a user-defined class, dir x returns an alphabetized list of the names containing the instance attributes and methods and attributes defined by its class.Python is the most desirable talent in the programming field.

Python Interview Questions and Answers are presenting you to the frequently-posted questions in Python interviews.

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Our Python Interview Questions is an outstanding store for anyone who is in need to boost the interview preparation. Hundred plus questions on Python Programming are posted by our experts and Python skilled professionals that help with various expertise levels to gain the supreme advantage from our blog.

We have designed with a special purpose of serving students and experts who are preparing for numerous Python Certification Exams and Interviews. These questions and answers are suitable for both freshers and experienced professionals at any level.

The questions are for intermediate to somewhat advanced Networking professionals, but even if you are just a beginner or fresher you should be able to understand the answers and explanations here we give. Python, a programming language that has modules, threads, automatic memory management, objects, and exceptions. Pythons are easy and simple to use, open-source, extensible, transferrable, and build-in data structure. Default chunk size: 2kB. Shallow Copy method.

You can use a global variable in other functions by declaring it as global in each function that assigns to it:. Python has an interesting for statement which lets you specify an else suite. In a construct like this one:. The equivalent code snippet below illustrates how the use of for…else lets you remove an extraneous flag variable from that loop:. Use your good judgment when deciding whether to use the for…else construct.

The next method returns the next value and is implicitly called at each loop increment. Both are used to read the content from the file but in different ways. If file xyz. In addition, class A can define methods that are unavailable in B, and also it is able to override methods in B. For Instance, If class B and class A both contain a method called functhen func in class B can override func in class A. Similarly, a method of class A can call another method defined in A that can invoke a method of B that overrides it.

It copies all the contents by value. Python does not provide interfaces like in Java. Abstract Base Class is a mechanism for specifying what methods must be implemented by its implementation subclasses. This module was made available from Python 2. The equivalent code snippet below illustrates how the use of for…else lets you remove flag variable from that loop:. Use your good judgment when deciding whether to use the for else construct.

For example, if x is a property of a user-defined class, then the class would have methods called setX and getX. You can use the static method if it is not acting on any data or a method that can be used by all the instances and all the classes in the hierarchy.

Given a list and a number find two numbers in the list that sums up to the number given? The object x is changed. Immutable objects does not allow modification after creation of objects.Python Questions and Answers has been designed with a special intention of helping students and professionals preparing for various Certification Exams and Job Interviews.

This section provides a useful collection of sample Interview Questions and Multiple Choice Questions MCQs and their answers with appropriate explanations. This section provides a huge collection of Python Interview Questions with their answers hidden in a box to challenge you to have a go at them before discovering the correct answer.

This section provides a great collection of Python Multiple Choice Questions MCQs on a single page along with their correct answers and explanation. If you select the right option, it turns green; else red. If you are preparing to appear for a Java and Python related certification exam, then this section is a must for you. This section simulates a real online test along with a given timer which challenges you to complete the test within a given time-frame.

Finally you can check your overall test score and how you fared among millions of other candidates who attended this online test. This section provides various mock tests that you can download at your local machine and solve offline. Every mock test is supplied with a mock test key to let you verify the final score and grade yourself.

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python programming questions and answers pdf

Previous Page Print Page. Python Interview Questions This section provides a huge collection of Python Interview Questions with their answers hidden in a box to challenge you to have a go at them before discovering the correct answer. Python Online Test If you are preparing to appear for a Java and Python related certification exam, then this section is a must for you. Python Mock Test This section provides various mock tests that you can download at your local machine and solve offline.Like our other parts of python programming interview questions, this part is also divided into further subcategories.

The reason we are doing is so you can practice all type of Python Interview Questions along with their answers. Here is how I divided these Python coding interview questions for experienced —. Keeping you updated with latest technology trends, Join DataFlair on Telegram.

python programming questions and answers pdf

If you are experienced then surely you have worked on projects and this is the only tool which can drive the interview on your side. It is a feedforward ANN model. This is different to the SVM or Naive Bayes algorithms in that it has an internal neural network for classification. Along with the librosa and soundfile libraries, I used the MLPClassifier from the sklearn library to perform speech emotion recognition with Python.

This classifier gets the probabilities for each class label. This is very commonly used as is SVM. The softmax classifier is a generalization of the binary logistic regression to multiple classes. Training and predicting using many models, it produces one superior output. Such online learning algorithms that stays passive for a correct classification outcome, but turns aggressive if there is a miscalculation.

This lets it update and adjust. Such an algorithm does not converge. Why did you choose OpenCV for your project on gender and age detection? What helped you make the decision? OpenCV is a very popular library for computer vision, and is powerful too. I chose it for my project on gender and age detection because it had the tools required for my project.

It had the following benefits:. What ratio did you choose to divide your dataset into training and testing sets? A classifier needs us to divide a dataset into training and testing sets. The ratio is very important because it can affect the accuracy of the model.

If we have few training data, the parameter estimates will have greater variance.

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And if we have a few test data, the performance statistic will have greater variance. For most of the projects, I used a ratio of I used the training set to train the model and the validation set to evaluate the performance of the model for different combinations of hyperparameter values so I could figure out which one was best. Why did you use config. I created a config file for this project to keep every setting at one place. This made it easy to change the settings once and for all.

This held the path to the input dataset, and the base path. It also held the relative paths to the training, validation, and testing sets. It also mentioned the relative sizes of the training and validation sets, which were 0.

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My favorite thing about XGBoost is that it is scalable. It is also easy and efficient, and delivers high performance and accuracy compared to some other algorithms.

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It is fast and has a Python API that makes its installation easier.Are you a python developer? Or looking for getting a job as Python programmers? We have prepared an exclusive ebook for python developers to practice Top 50 Python Interview Questions that are asked frequently. How To Download This Ebook? Please support us, by using one of the buttons below to unlock the Ebook.

Do you need to discuss on any Python Questions? Or Do you have any Python related Query? Newer Post Older Post Home. We have prepared an exclusive ebook for python develope About Python Language.

python programming questions and answers pdf

Python is a general-purpose interpreted, interactive, object-oriented, and high-level programming language. It was created by Guido van Ros Learn Data Structure and Algorithms in Python. Python data structures are very intuitive from a syntax point of view and they offer a large choice of operations. This pdf tutorial by Google has created a free Python class, and these classes gives very good understanding about python language and its fundamentals.

You can Python 3 described in one pic. Python 3. How to learn data science? First most important thing to learn any new technology Yield in Python.

Yield keyword is used to define return of generator, replacing the return of a function to provide a result to its caller without destroSo, be sure to come back for new coding exercises.

If you enjoy this post, please spread the love by share it with others. Want to learn all the Python skills you need? Check out my Complete Python Course for Beginners. Mosh plz help me I tried to enroll to your complete python course. I tried to do the payment more than 10 times but the payment is not happening plz do something. I want to get your course. Write a function that returns the sum of multiples of 3 and 5 between 0 and limit parameter.

For example, if limit is 20, it should return the sum of 3, 5, 6, 9, 10, 12, 15, 18, The problem is that I can't figure out how to eliminate de duplicates of the multiples of 3 and 5, like 15 or Please help! I just got the value with this logic. That would be really helpful for me to learn. Adding periods before each line just to keep the indentation in place if that might help.

You can eliminate duplicates from list e.

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Here is the code: 2. Not sure. But for me this logic worked: Adding periods before each line just to keep the indentation in place if that might help.

python programming questions and answers pdf

Can someone give me a hint plz. Write a function called showNumbers that takes a parameter called limit. It should print all the numbers between 0 and limit with a label to identify the even and odd numbers.

Please do you also post questions on c. This could go a long way to help jump start beginners. Thanks in advance. Write a function for checking the speed of drivers. This function should have one parameter: speed.

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