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How to find Python list installed modules and version?
1. Using help() function (without pip): This will gives you a list of the installed module on the system. This list contains modules and packages that come pre-installed with your Python and all other you have installed explicitly. Here is an example of running help function on my system (Python version 2).
What’s the difference between sorted and sort in Python?
Python has its own implementation of sort () function and another is sorted () function where sort () will sort list whereas, sorted function will return new sorted list from an iterable.
How to sort list in descending order in Python?
The list.sort () function can be used to sort list in ascending and descending order and takes argument reverse which is by default false and if passed true then sorts list in descending order. Python uses Tim-sort algorithm to sort list which is a combination of merge sort and time sort .
How to find the number of Python modules?
You can use pip commands with grep command to search for any specific module installed on your system. For instance, you can also list out all installed modules with the suffix “re” in the module name. How to count the number of Python modules installed on your system? You can use wc (word count) command.
How to check the latest version of Python?
For more understanding, you can check the complete guide for managing Python modules using pip. If you have the latest version of Python, pip comes preinstalled with Python. Run following commands on the command line (not on Python console).
How to AUTO register a class in Python 3.6?
In python 3.6 simpler customization of class creation was introduced ( PEP 487 ). An __init_subclass__ hook that initializes all subclasses of a given class. In this example, PluginBase.subclasses will contain a plain list of all subclasses in the entire inheritance tree.
When is the register function called in Python?
The problem is the same in both cases; the register function is called (either by the metaclass or directly as a decorator) after the class object is created, but before it has been bound to a name.