PHP-MySQL | Transaction with commit and rollback try { // First of all, let's begin a transaction $db->beginTransaction(); // A set of queries; if one fails, an exception should be thrown which we are handling at …

Python | Global, Protected, and Private Global, Protected, and Private access modifiers in Python. Python does not use these keywords to control access modifications instead single and double underscore  ‘_’ symbols are used to specify Protected and  Private to determine the access control. …

Primitive data types are Integers, Float, Strings, and Boolean. Non-primitive data types are Array, List, Tuples, Dictionary, Sets, and Files.    

Python | Lambda function A lambda function is a small anonymous function. This function can have any number of parameters but, can have just one statement.     Syntex:  lambda arguments : expression   a = lambda x,y : …

Python | Send an email To send an email, Python provides smtplib and email modules. Import these modules into the created mail script and send mail by authenticating a user. It has a method SMTP(smtp-server, port). …

Python | Exception Handling Python has many built-in exceptions that are raised when your program encounters an error. Try and Except Statement – Catching Exceptions: Try and except statements are used to catch and handle …

A few common security issues that can be avoided by using Django are: Clickjacking Cross-site scripting and SQL injection

Windows | Add desktop icon windows 10 1. Right-click on the desktop and click on Personalization   2. Under Personalization > Themes > Related Settings, select Desktop icon settings.   3. Choose the icons you would like to have on your …

Python | zip() Function Python zip() function returns a zip object, which maps a similar index of multiple containers. It takes an iterable, converts it into an iterator, and aggregates the elements based on the iterable passed. …

Python | Iterator | (__iter__ and __next__) Iterators are objects that can be iterated upon. The iterator protocol for Python declares that we must make use of two functions to build an iterator- iter() and next().   …

Python | Monkey Patching In Python, the term monkey patch only refers to dynamic modifications of a class or module at run-time.   # m.py class A: def func(self): print("Hi") import m def monkey(self): print …

Optimization is at the heart of many scientific and engineering problems—from minimizing cost functions to training machine learning models. Python’s SciPy library provides a robust module called scipy.optimize that offers a suite of optimization algorithms …

Django | Meta Class A Meta class is simply an inner class that provides metadata about the outer class in Django. It defines such things as available permissions, associated database table name, singular and plural versions …

If bool(a) returns False, then x is assigned the value of b.