All the objects created for the class will be using the same copy of class attributes. f(1,2,3,a=1,b=2,c=3) Here are some of the basic differences between these two Python versions. Ex: >>>dir(str) – will only display the defined symbols. >>>help() – it will open the prompt for help as help> # static_method((),{}) After creating a connection you can try running all the basic MySQL commands to insert update and delete data entry from the database. But, it is byte-code interpreted programming language. Function in Python is a block of code which is performed when we call it to execute. Being popular, most of the freshers tend towards the language. if( !psingle ) It is an interpreter based programming language, interactive and object-oriented scripting language.It supports methods such as functional and structured as well as OOP. self._some_other_property = “VERY nice” print(“This is the constructor method”), import pandas as pd def  be_awesome(self): df1 = pd.melt(df,var_name = ‘stack’, value_name = ‘value’) Print(df) This is used to convert the code to corresponding module in django, Python lists can store data of different datatypes enclosed within square brackets([]). while(True): D = [11/7/2018] #this is a object type date f(a=1,b=2,c=3,zzz=”hi”) self._some_property = “properties are nice” Based on them you can create files, update the contents, copy, and delete files. f(1,2,3,”groovy”) These libraries have protocol implemented. Merge is the single operation for all the standard database join operations between dataframe objects. Python lacks in speed and performance. If class A is a subclass of class B, then everything in B is accessible in /by class A. I have explained each of the questions. # TypeError: ‘str’ object is not callable USING STATIC METHOD. The list object will be [1, 2].Python handles mutable and immutable objects differently. There are many sorting algorithms in the data structure. o.static_method(1,2,x=3,y=4) _salary = None #salary is a protected member & it can accessible by the subclasses of Person, >>>help(str) or List and tuple are, both can hold heterogeneous data type values. 1) Define the Pandas/Python pandas? The reduce function calls lambda function iteratively (for all the elements in the list) by passing the previous result and a new element in the list. The same name mangling technique can be applied to the class methods. If you are working on multiple classes in your program, there can be a possibility of the overriding attribute name. return i You can expect questions on these libraries. Pass is generally a null operation, and nothing is expected to happen when executing this. Python has two built-in functions that work with inheritance: For example you could except the Import Error exception: try: from Pyside2 import QtCore, QtGui except ImportError: from PySide import QtCore, QtGui Alternatively, you can use the importlib module: import importlib import sys PySide = importlib.import_module(‘Pyside2’ if ‘Pyside2’ in sys.modules else ‘PySide’). Every single file is called as a module that can import various other modules such as attributes and objects. def f2(arg1,arg2,*args,**kwargs): print(arg1,arg2, args, kwargs) I can say- Python 2 is a legacy now. Print(df) We are creating an object of type int. print(“The shark is being awesome”), The constructor method is used to initialize data. Dwelling into Python for many years and analyzing the trends in thus domain very closely; I’m writing this post to share with you all the interview questions which will help you throughout your career. Note: If you are asked for this question in the interview, you need to explain it completely. Go through all the different sorting techniques mentioned above. Class is a block of code where we write create class attributes which include class variable and class methods. Instead of saving complete range values [0, 1, 23,…, 10], it saves the equation like (i=0; i<11; i+=1). Depending on the data type of the variable, there are different methods associated with it. (See the example below). List can have multiple data type in the single list where it can’t happen while using a tuple. simPY comes with data collection capabilities. Don't let the Lockdown slow you Down - Enroll Now and Get 3 Course at 25,000/- Only. Then use join() string method. Like map function, the filter takes two arguments- function and the list. You don’t need to import any of the Python libraries to use the built-in functions. Blocks in python is defined using indentation. Before Python interview questions, take a look at the list of key Python programming language features: Python is one of the most universal programming languages. f2(1,2,3,a=1,b=2,c=3) Output: id(2) = 10919424. o.normal_method lst1: the list that has to be converted to string, str1: the string that has to be converted to list. If you practice it well, you will get a good understanding of Python. The first three sorting are simple. For example, Instagram has migrated its development from Python 2 to Python 3. What is the purpose of the request module in Python? While execution, your attribute name will be changed as  ___. In a heap-min the key at root should be minimum among all the keys present in the heap. >>> if voting_age < 18: raise ValueError(“voting age should be atleast 18 and above”), ValueError: voting age should be at least 18 and above. The file uses the line that is the most important line to be used: Readcsv = CSV.reader(csvfile,delimiter = ‘,’). if os.path.isdir(sChildPath): f2(1,2,3,”groovy”) Sometimes one might want more fine-grained control over how much to read in each iteration. def  be_awesome(self): 12. The format of the print statement is replaced in the new Python version. Eg: import os; os.path.exists(‘/home/abc’), os.path.isfile() – this method is used to check whether the give path is a file or not. o = MyClass() Due to its own clean up mechanism, python would try to de-allocate every other object. We can build. Global variables are so dangerous so Python wants to make sure that you really know that’s what you’re playing with by explicitly requiring the global keyword. To iterate the elements group and containers, Python iterators are used. Garbage collection is a memory management technique that is used to free up memory by deleting unwanted objects. 5 def factorial (n): A         B                                             stack    value The class defines the behavior of the instances i.e. It means if we have a large range to be get generate a list for, say a billion, xrange is the best function to be used. It can then help in executing the initialization code for a package or setting the <__all__> variable. If i use only readline() with open(‘xyz.py’, ‘r’) as f: print f.readline() The o/p will be whole file >>> def print_triangle(n): You can trigger an exception in your Python script in the following ways. Iterator objects in python conform to the iterator protocol, which basically means they provide two methods: This programing will throw an error as you are trying to access the private variable (__y) outside of the class. There are also many who are already working and want to switch in the Python domain. Static Method is best suited if the Base class needs to keep count of instances of all it’s subclass too. There are also some more differences between sorted() and sort() based on the performance and use-cases. We can either use a “Shallow Copy” or follow a “Deep Copy” approach. Areas in Chennai which are nearer to us are Adambakkam, Adyar, Alandur, Arumbakkam, Ashok Nagar, Besant Nagar, Chengalpet, Chitlapakkam, Choolaimedu, Chromepet, Ekkaduthangal, Guindy, Jafferkhanpet, K.K. Which value can be easily done with the competition than those who python list interview questions started studying Python programming a. Give an example of web scraping, there will be changed as _ < class_name __! Any Python programming, an object called a built-in Python function apps and.! Whether its online test or interview round this issue and to distinguish override attributes, would! 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