Interview Questions Answers in Python

What are Python modules? Name a few Python built-in modules that are often used.

Answer

Files containing Python code are called modules. This code can make use of variables, classes, or functions. A.py file containing executable code is called a Python module. The frequently utilized built-in modules are as follows:

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Question { 881 }

What is the Lambda function?

Answer

One kind of anonymous function is a lambda function. This function accepts a single statement and as many parameters as you like.

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Question { 1132 }

Why Lambda is used in Python?

Answer

When an anonymous function is needed temporarily, Lambda is usually used. Two methods exist for applying lambda functions:

Lambda function assignment to a variable
Using another function to wrap a Lambda function

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Question { 1012 }

Differentiate between range and xrange.

Answer

Functionality-wise, xrange and range are nearly identical. Both of these let you create an integer list that you may use however you like. The only distinction between xrange and range is that x range returns an xrange object, whereas range returns a Python list object. Range will use as much memory as possible to produce your array of numbers, which can result in a memory error and crash your program. This is particularly true if you are working with a device that needs a lot of memory, like a phone. It has a memory issue and is a beast.

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Question { 824 }

In Python, how do you remark numerous lines?

Answer

Multi-line comments are those that contain more than one line. All lines that will be commented must begin with a #. To mark many lines, you can also utilize a handy shortcut. All you need to do is input a # once while holding down the Ctrl key and left-clicking wherever you want a # character to appear. Every line where you place your cursor will have a comment added to it.

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Question { 985 }

Why isn't all the memory de-allocated when Python exits?

Answer

Certain Python modules are not always released or deallocated when Python terminates, particularly those that include circular references to other objects or objects referenced from global namespaces.
Python's effective cleanup mechanism would attempt to de-allocate/destroy all other objects upon termination.
De-allocating the RAM that the C library has reserved is difficult.

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Question { 998 }

Explain Python packages.

Answer

A Python package is an assembly of modules arranged in a directory, usually for the purpose of managing and organizing related features. To tell Python that a directory should be handled as a package, each package includes a __init__.py file. Packages logically aggregate similar code components, such functions, classes, or variables, into distinct modules, improving code structure and reusability.

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Question { 1180 }

What are built-in types of Python?

Answer

• Built-in functions
• Boolean
• String
• Complex numbers
• Floating point
• Integers

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Question { 1011 }

What are the benefits of NumPy arrays over (nested) Python lists?

Answer

Python lists are suitable general-purpose containers. Python's list comprehensions make them easy to develop and use, and they enable (relatively) fast insertion, deletion, appending, and concatenation.

They have several drawbacks, such as the inability to perform "vectorized" operations like elementwise addition and multiplication and the requirement for Python to store type information for each element while working on it due to the possibility of include objects of multiple kinds.

Histograms, algebra, linear, basic statistics, rapid searching, convolutions, FFTs, and more are among the characteristics that make NumPy arrays faster.

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Question { 982 }

What are the different types of inheritance in Python?

Answer

Single inheritance: A derived class acquires the members of a single superclass.

many inheritance: A derived class inherits traits from many base classes.

Muti-level inheritance: base1 is the source of the derived class D1, whereas base2 is the source of D2.

Any child class can be inherited from a single base class using hierarchical inheritance.

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Question { 1053 }

Is multiple inheritance possible in Python?

Answer

numerous inheritance is the process of a class being inherited from numerous parent classes. Python permits multiple inheritance, unlike Java.

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Question { 1006 }

Explain polymorphism in Python.

Answer

Polymorphism is the capacity to assume different shapes. For instance, the child class may also have a method called ABC with its parameters and variables if the parent class has one. Polymorphism is made possible by Python.

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Question { 862 }

What are Python's key features?

Answer

Discuss the advantages of Python, such as simplicity, readability, cross-platform compatibility, and large standard libraries.

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Question { 833 }

How do you handle exceptions in Python?

Answer

Using the `try`, `except`, `else`, and `finally` blocks to catch and handle exceptions.

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Question { 1380 }

What is the difference between `deepcopy` and `shallow copy`?

Answer

A shallow copy creates a new object but does not create copies of nested objects, while a deep copy creates copies of all nested objects as well.

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