Python | Print String N times >>> s = 'Python' >>> n = 5 >>> print(s * n) PythonPythonPythonPythonPython  

Windows | Set path and environment variables in Windows 11 Press the + to access the Power User Task Menu. In the Power User Task Menu, select the System option. In the System window, scroll to the bottom and click the About option. In the System …

Python | Reversing a String >>> x = 'PythonWorld' >>> print(x[: : -1]) dlroWnohtyP  

Python | Self Self is used to represent the instance of the class. With this keyword, you can access the attributes and methods of the class in python. It binds the attributes with the given arguments.   …

Django | Features  Features available in Django are Optimized for SEO Extremely fast A loaded framework that features authentications, content administrations and RSS feeds Exceptionally scalable to meet the heaviest traffic demand Highly secure Versatility, …

Git | Undo the most recent local commits Bellow command is used to reset the last local commit. git reset HEAD~        

 Python | In-place swapping of two numbers >>> a, b = 10, 20 >>> print(a, b) 10 20 >>> a, b = b, a >>> print(a, b) 20 10  

Using the query method we can print SQL query from the queryset post = Post.objects.all() print(post.query)  

Python | Join all items of a list to convert into a single string >>> x = ["Python", "Online", "Training"] >>> print(" ".join(x)) Python Online Training  

Python | Return multiple values from functions >>> def A(): return 2, 3, 4 >>> a, b, c = A() >>> print(a, b, c) 2 3 4  

Windows | Set path and environment variables in Windows 8 Press the + to access the Power User Task Menu Now, select the System option. Click the Advanced System Settings link in the left column. In the Advanced tab, click the  button. In the Environment Variables window highlight …

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 …

Python | vars(), dir() and help()  The vars() function returns the __dict__ attribute of an object. The dir() function returns all properties and methods of the specified object, without the values. The help() function is used to display …

No. However, Abstract Base Classes (ABCs) are a feature from the abc module that let us declare what methods subclasses should implement. Python supports this module since version 2.7.

Python | Difference between @staticmethod and @classmethod A staticmethod is a method that knows nothing about the class or the instance it was called on. It just gets the arguments that were passed, no implicit first argument. …