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Top Software Testing Interview Questions & Answers - Software Testing Material

We have prepared the most frequently asked Python Interview Questions and Answers that will help you to prepare for the interview questions on Python that an interviewer might ask you during your interview.

In this list of Python Scripting interview questions, we have covered all commonly asked basic and advanced Python programming questions with detailed answers to help you clear the job interview easily. We have covered almost all important Python interview questions for freshers and experienced candidates to help you prepare for the upcoming interview.

This detailed guide of Python coding interview questions will help you to crack your Job interview for Python Programming. What are the benefits of using Python? Python is a programming language with objects, modules, threads, exceptions and automatic memory management. The benefits of pythons are that it is simple and easy, portable, extensible, build-in data structure and it is an open source. PEP 8 is a coding convention, a set of recommendation, about how to write your Python code more readable.

Pickle module accepts any Python object and converts it into a string representation and dumps it into a file by using dump function, this process is called pickling. While the process of retrieving original Python objects from the stored string representation is called unpickling. Python language is an interpreted language.

Python program runs directly from the source code. It converts the source code that is written by the programmer into an intermediate language, which is again translated into machine language that has to be executed.

Python memory is managed by Python private heap space. All Python objects and data structures are located in a private heap. The programmer does not have an access to this private heap and interpreter takes care of this Python private heap.

The sdet interview questions python 02 of Python heap space for Python objects is done by Python memory manager. The core API gives access to sdet interview questions python 02 tools for the programmer to code. Python also have an inbuilt garbage collector, which recycle all the unused memory and frees the memory and makes it available to the heap space. PyChecker is a static analysis tool that detects the bugs in Python source code and warns about the style and complexity of the bug.

Pylint is another tool that verifies whether the module meets the coding standard. A Python decorator is a specific change that we make in Python syntax to alter functions easily. The difference between list and tuple is that list is sdet interview questions python 02 while tuple is sdet interview questions python 02. Tuple can be hashed for e.

Everything in Python is an object and all variables hold references to the objects. The references values are according to the functions; as a result you cannot change the value of the references. However, you can change the objects if it is mutable. They are syntax constructions to ease the creation of a Dictionary or List based on existing iterable.

In Python, every name introduced has a place where it lives and can be hooked. This is known as namespace. It is like a box where a variable name is mapped to the object placed. Whenever the variable is searched out, this box will be searched, to get corresponding object.

It is a single expression anonymous function often used as inline function. A lambda form in python does not have statements as it is used to sdet interview questions python 02 new function object and then return them at runtime.

Pass means, no-operation Python statement, or in other words it is a place holder in compound statement, sdet interview questions python 02 there should be a blank left and nothing has to be written. In Python, iterators are used to iterate a group of elements, containers like list.

A unit testing framework in Python is known as unittest. It supports sharing of setups, automation testing, shutdown code for tests, aggregation of tests into collections.

A mechanism to select a range of items from sequence types like list, tuple, strings. The way of implementing iterators are known as generators. It is a normal function except that it sdet interview questions python Sdet Interview Questions Python Upgrade 02 expression in the function.

A Python documentation string is known as docstring, it is a way of documenting Python functions, modules and classes. To copy an object in Python, you can try copy. You cannot copy all sdet interview questions python 02 but most of. Python sequences can be index in positive and negative numbers. For positive index, 0 sdet interview questions python 02 the first index, 1 is the second index and so forth.

For negative index, -1 is the last index and -2 is the second last index and so forth. In order to convert a number into a string, use the inbuilt function str. If you want a octal or hexadecimal representation, use the inbuilt function oct or hex. Xrange returns the xrange object while range returns the list, and uses the same memory and no matter what the range size is.

In Python, module is the way to structure program. Each Python program file is a module, which sdet interview questions python 02 other modules like objects and attributes.

The folder of Python program is a package of modules. A package can have modules or subfolders. Local variables : If a variable is assigned a new value anywhere within the function's body, it's assumed to be local.

Global variables : Those variables that are only referenced inside a function are implicitly global. To share global variables across modules within a single program, create a special module. Import the config module in all modules of your application. The module will be available as a global variable across modules.

To make a Python Script executable on Unix, sdet interview questions python 02 need to do two things, Script file's mode must be executable and the first line must begin with!

By using a command os. To generate random numbers in Python, you need to import command as import random random. It is a Floor Divisionoperator sdet interview questions python 02, which is used for dividing two operands with the result as quotient showing only digits before the decimal point. Python does not require explicit memory management as the interpreter Sdet Interview Questions Python Keys itself allocates the memory to new variables and free them automatically Provide easy readability due to use of square brackets Easy-to-learn for beginners Having the built-in data types sdet interview questions python 02 programming time and effort from declaring variables 34 Mention the use of the sdet interview questions python 02 function in Python?

The use of the split function in Python is that it breaks a string into shorter strings using the defined separator. It gives a list of all words present in the string.

Werkzeug and jingja are two of its dependencies. Flask is part of the micro-framework. Which means it will have little to no dependencies on external libraries. It makes the framework light while there is sdet interview questions python 02 dependency to update and less security bugs. Flask is a sdet interview questions python 02 primarily build for a small application with simpler requirements.

In flask, you don't have to use external libraries. Flask is ready to use. Pyramid are build for larger applications. It provides flexibility and lets the developer use the right tools for their project. The developer can choose the database, URL structure, templating style and. Pyramid is heavy configurable. Like Pyramid, Django can also used for larger applications. It includes an ORM. The common way for the flask script to work is Either it should be the import path for your application Or the path to a Python file 39 Explain how you can access sessions in Flask?

A session basically allows you to remember information from one request to. In a flask, it uses a signed cookie so the user can look at the session contents and modify. The user can modify the session if only it has the secret key Flask. Basically, Flask is a minimalistic framework which behaves same as MVC framework. Flask supports database powered application RDBS.

Such system requires creating a schema, which requires piping the shema. So you need to install sqlite3 command in order to create or initiate the database in Flask. They are called after the response been constructed. They are not allowed to modify the request, sdet interview questions python 02 their values are ignored.

The data in the failed server won't get removed, but there is a provision for auto-failure, which you can configure for multiple sdet interview questions python 02. Fail-over can be triggered during any kind of socket or Sdet interview questions python 02 server level errors and not during normal client errors like adding an existing key.

When one instance fails, several of them goes down, this will put larger load on the database server when lost data is reloaded as client make a request. To avoid this, if your code has been written to minimize cache stampedes then it will leave a minimal impact Another way is to bring up an instance of Memcached on a new machine using the lost machines IP address Code is another option to minimize server outages as it gives you the liberty to change the Memcached server list with minimal work Setting timeout value is another option that some Memcached clients implement for Memcached server outage.

When your Memcached server goes down, the client will keep trying to send a request till the time-out limit is reached 44 Explain what is Dogpile effect? How can you prevent this effect?

Dogpile effect is referred to the sdet interview questions python 02 when cache expires, and websites are hit by the multiple requests made by the client at the same time.

This effect can be prevented by using semaphore lock. In this system when value expires, first process acquires the lock and starts generating new value.

Memcached common misuse is to use it as a data store, and not as a cache Never use Memcached as the only source of the information you need to run your application.

Testing of the screen in different resolutions with the help of zooming in and zooming out like x , x, etc. Do I need to bring my own laptop? The detailed installation guides is provided in the E-Learning for setting up the environment. A completely unknown pool of testing resources test your application, you can judge the quality of your product on the basis of number of bugs reported. We will start with a Feature Study before implementing a project. Evaluating and Reporting 5. For simplicity, assume fixed pricing.

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