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Articles by Mohd Mohtashim
185 articles
Creating Instance Objects in Python
To create instances of a class, you call the class using class name and pass in whatever arguments its __init__ method accepts."This would create first object of Employee class" emp1 = Employee("Zara", 2000) "This would create second object of Employee class" emp2 = Employee("Manni", 5000)You access the object's attributes using the dot (.) operator with object. Class variable would be accessed using class name as follows −emp1.displayEmployee() emp2.displayEmployee() print "Total Employee %d" % Employee.empCountExampleNow, putting all the concepts together − Live Demo#!/usr/bin/python class Employee: 'Common base class for all employees' empCount = 0 def __init__(self, name, salary): ...
Read MoreHow to create an image to zoom with CSS and JavaScript?
Following is the code to create an image zoom:Example Live Demo * {box-sizing: border-box;} .img{ display: inline-block; } .img-zoom-container { position: relative; } .img-zoom-zoomLens { position: absolute; border: 1px solid #d4d4d4; width: 50px; height: 50px; } .myresult{ display: inline-block; } .img-zoom-result { border: 1px solid #d4d4d4; } Image Zoom Example Hover over the image on ...
Read MoreInsert the string at the beginning of all items in a list in Python
In this post we need to enter the string at the beginning of all items in a list. For ex: We're given string = "Tutorials_Point" and List contains multiple element such as "1", "2" etc. So in this we need to add Tutorials_Point in front of "1", "2" and so on.ExampleAproach 1 Live Demosample_list = [1, 2, 3] print(['Tutorials_Point{0}'.format(i) for i in sample_list])Output//['Tutorials_Point1', 'Tutorials_Point2', 'Tutorials_Point3']Approach 2 Live Demosample_list = [1, 2, 3] sample_str = 'Tutorials_Point' sample_str += '{0}' sample_list = ((map(sample_str.format, sample_list))) print(sample_list)Output//['Tutorials_Point1', 'Tutorials_Point2', 'Tutorials_Point3']
Read MorePython - Insert list in another list
A list also the extend() method, which appends items from the list you pass as an argument. extend() − Python list method extend() appends the contents of seq to list. You can read more about it here "https://www.tutorialspoint.com/python/list_append.htm"Now let us see hands onExample Live Demo#append first_list = [1, 2, 3, 4, 5] second_list = [6, 7, 8, 9, 10] first_list.append(second_list) # print result using append print("The list pattern using append is : " + str(first_list)) #extend third_list_ = [11, 12, 13, 14, 15] fourth_list = [16, 17, 18, 19, 20] third_list_.extend(fourth_list) print("The list pattern using extend is : " + str(third_list_))OutputThe ...
Read MorePython - Increasing alternate element pattern in list
In this we are going to use List Comprehension with enumerate() Python provides compact syntax for deriving one list from another. These expressions are called list comprehensions.List comprehensions are one of the most powerful tools in Python. Python’s list comprehension is an example of the language’s support for functional programming concepts. You can read more about it here "www.tutorialspoint.com/python-list-comprehension" The enumerate() method adds counter to the iterable. You can read more about enumerate here " www.tutorialspoint.com/enumerate-in-python"Example Live Demo# declare list of integers my_list = [1, 2, 3] # printing the value print("Printing my_list list : " + str(my_list)) response = [value ...
Read MoreParsing XML with DOM APIs in Python
The Document Object Model ("DOM") is a cross-language API from the World Wide Web Consortium (W3C) for accessing and modifying XML documents.The DOM is extremely useful for random-access applications. SAX only allows you a view of one bit of the document at a time. If you are looking at one SAX element, you have no access to another.Here is the easiest way to quickly load an XML document and to create a minidom object using the xml.dom module. The minidom object provides a simple parser method that quickly creates a DOM tree from the XML file.The sample phrase calls the ...
Read MoreMultithreaded Priority Queue in Python
The Queue module allows you to create a new queue object that can hold a specific number of items. There are following methods to control the Queue −get() − The get() removes and returns an item from the queue.put() − The put adds item to a queue.qsize() − The qsize() returns the number of items that are currently in the queue.empty() − The empty( ) returns True if queue is empty; otherwise, False.full() − the full() returns True if queue is full; otherwise, False.Example#!/usr/bin/python import Queue import threading import time exitFlag = 0 class myThread (threading.Thread): def __init__(self, threadID, name, q): ...
Read MoreSending an HTML e-mail using Python
When you send a text message using Python, then all the content are treated as simple text. Even if you include HTML tags in a text message, it is displayed as simple text and HTML tags will not be formatted according to HTML syntax. But Python provides option to send an HTML message as actual HTML message.While sending an e-mail message, you can specify a Mime version, content type and character set to send an HTML e-mail.ExampleFollowing is the example to send HTML content as an e-mail. Try it once −#!/usr/bin/python import smtplib message = """From: From Person To: ...
Read MoreDisconnecting Database in Python
To disconnect Database connection, use close() method.db.close()If the connection to a database is closed by the user with the close() method, any outstanding transactions are rolled back by the DB. However, instead of depending on any of DB lower level implementation details, your application would be better off calling commit or rollback explicitly.
Read MoreCommit & RollBack Operation in Python
COMMITCommit is the operation, which gives a green signal to database to finalize the changes, and after this operation, no change can be reverted back.Here is a simple example to call commit method.db.commit()ROLLBACKIf you are not satisfied with one or more of the changes and you want to revert back those changes completely, then use rollback() method.Here is a simple example to call rollback() method.db.rollback()
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