[::-1] is used to inverse the order of a sequence. >>> my_list = [1,2,3,5,6,7,8,9] >>> my_list[::-1] [9, 8, 7, 6, 5, 3, 2, 1]    

The two static analysis tools used to find bugs in Python are Pychecker and Pylint. Pychecker detects bugs from the source code and warns about its style and complexity. While Pylint checks whether the module …

Python | *args and **kwargs  *args is a special syntax used in the function definition to pass variable-length arguments. e.g: myFun(*argv) def func(*args): for i in args: print(i) func(2,3,4) #Output 2 3 4   **kwargs is …

Windows | Set path and environment variables in Windows Vista and Windows 7 On the desktop, right-click the Computer icon and select Properties. or Press the  and right-click the Computer option in the Start menu, and select Properties. Click the Advanced System Settings link in the left column. In …

Python | Module and Package Module: The module is a simple Python file that contains collections of functions and global variables and with having a .py extension file. It is an executable file and to organize all …

Python | What are decorators A decorator in Python is a function that modifies the behavior of an existing function or class without any modification to the original source code.  A decorator takes another function as its argument and returns yet …

Django | Check Version  To check for the version of Django installed on your system, you can open the command prompt and enter the following command: python -m django –version You can also try to import …

Python | namedtuple A namedtuple will let us access a tuple’s elements using a name/label. We use the function namedtuple() for this, and import it from collections. >>> from collections import namedtuple #format >>> result=namedtuple('result','Physics Chemistry …

Django | Disadvantages  Django has the following disadvantages: Django's modules are bulky. It is completely based on Django ORM. Components are deployed together. We must know the full system to work with it.

Django | Set up Database We need to edit the setting.py file present in the project, which contains all the settings related to the project. By default Django comes with an SQLite database; The  SQLite database …

Django | Session Framework Using the session framework, you can easily store and retrieve arbitrary data based on the pre-site-visitors. It stores data on the server side and takes care of the process of sending and …

Python has a multi-threading package, but commonly not considered good practice to use it as it will result in increased code execution time. Python has a constructor called the Global Interpreter Lock (GIL). The GIL ensures …

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 …

Finalize method is used for freeing up the unmanaged resources and cleaning up before the garbage collection method is invoked. This helps in performing memory management tasks.

Python | ‘is’, ‘not’, and ‘in’ operators is: Returns True if both variables are the same object >>> x = 5 >>> y = 5 >>> z = 1 >>> x is y True >>> x …