October 12, 2018

Sreekanth B

Palo Alto Networks Most Frequently Asked Python Latest Interview Questions Answers

How do you create a Button Element in Python?

The Button Class is available in Tkinter Module. We first need to import it and then we can take in a frame label by the following command:

button1 = Button(frame1, text = “I am a Button”)
button1.grid()

button 1 is a variable to hold the Button Element and frame 1 is the name of the Frame variable onto to which we want to adjust our Button. It is mandatory to define the Frame first.

How do you print the sum of digits from 1 to 50 in Python?

print(sum(range(1,51))

This command would print in the sum of digits from 1 to 50

What is PEP 8 in Python?

PEP 8 is a set of recommendations about writing Python Code so as to make it readable and useful for other programmers. It is more of a coding convention.
45. What is a Decorator in Python?

Decorators allow you to wrap a method or a class function that executes a set of code lines before or after the execution of the original code. Decorator also allows to inject or modify code in methods or classes.
Palo Alto Networks Most Frequently Asked Python Latest Interview Questions Answers
Palo Alto Networks Most Frequently Asked Python Latest Interview Questions Answers

What is Django Framework in Python?

Django is a high-level Python framework which is used primarily for Web Development. This framework encourages fast and efficient development with pragmatic and clean design. Built by experienced developers, it takes care of much of the hassle of Web development, so you can focus on writing your app without needing to reinvent the wheel. It’s free and open source.

Is Python a Compiled or an Interpreted Programming Language?

Python programs have the extension .py. These source files are first compiled to Byte Codes (which does not contain the binary codes). These Byte Code files helps in startup speed optimization. These byte-codes are then sent to the Python Virtual Machine where lines of codes are read one after another which means that it is interpreted.

Enlist the Non-Mutable Built-in types in Python programming environment?

The Non-Mutable Built-in types in Python Programming Environment are as follows:

1. Tuples
2. Numbers
3. Strings

How can we define Scope in a Python program?

Python programming environment does not support the use of Braces for Defining Scope for a variable or a method. However, it uses Indentations to let the Python interpreter decide the scope itself. Proper indentations, if not used will normally generate an error.

Enlist various Exceptions identified by Python?

The various exceptions identified by Python Environment are as follows:
1. IOError
2. IndexError
3. KeyError
4. NameError
5. SyntaxError
6. ValueError
7. TypeError.

What Are The Rules For Local And Global Variables In Python?

In Python, variables that are only referenced inside a function are implicitly global. 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.

What is the output of print tuple if tuple = ( ‘abcd’, 786 , 2.23, ‘john’, 70.2 )?

It will print complete tuple. Output would be (‘abcd’, 786, 2.23, ‘john’, 70.200000000000003).

What is the output of print tuple[0] if tuple = ( ‘abcd’, 786 , 2.23, ‘john’, 70.2 )?

It will print first element of the tuple. Output would be abcd.

Name some of the features of Python.

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.
It can be easily integrated with C, C++, COM, ActiveX, CORBA, and Java.

Do you have any personal projects?
Really?

This shows that you are willing to do more than the bare minimum in terms of keeping your skillset up to date. If you work on personal projects and code outside of the workplace then employers are more likely to see you as an asset that will grow. Even if they don’t ask this question I find it’s useful to broach the subject.

Is python a case sensitive language?

Yes! Python is a case sensitive programming language.

What are the supported data types in Python?

Python has five standard data types −

Numbers
String
List
Tuple
Dictionary

What is the output of print str if str = ‘Hello World!’?

It will print complete string. Output would be Hello World!.

What is the output of print str[0] if str = ‘Hello World!’?

It will print first character of the string. Output would be H.

What is the output of print str[2:5] if str = ‘Hello World!’?

It will print characters starting from 3rd to 5th. Output would be llo.

What is the output of print str[2:] if str = ‘Hello World!’?

It will print characters starting from 3rd character. Output would be llo World!.

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