import collections c = collections.Counter('extremely') c['z'] = 0 print c print list(c.elements()) namedtuple() The namedtuple() function returns a tuple-like object with named fields. In this guide, I'll cover why and when to use collections and provide interesting examples of each. These field attributes are accessible by lookup … Python supports a type of container like dictionaries called “namedtuple()” present in module, “collections“. The counter is a sub-class available inside the dictionary class. Basically, the Collections module is a built-in module, so it will come while the installation of python (Python 2 and Python 3). If you don’t have Python yet and want the simplest way to get started, we recommend you use the Anaconda Distribution - it includes Python, NumPy, and many other commonly used packages for scientific computing and data science. $ python collections_counter_get_values.py a : 3 b : 2 c : 1 d : 1 e : 0 Elements. Download and run the installer, select “Install for all users,” and then click “Next. See Configuring the ansible-galaxy client if you are using any other Galaxy server, such as Red Hat Automation Hub. Enums (enumerated type) are basically a way to organize various things. But on contrary, it supports both access from key value and iteration, the functionality that dictionaries lack. The elements() method returns an iterator over elements repeating each as many times as its count. The counter is a sub-class available inside the dictionary class. It is available in the enum module, in Python 3.4 and up (also available as a backport in PyPI named enum34.) But these aren't always the most optimal. Installing Python 2 is a snap, and unlike in years past, the installer will even set the path variable for you (something we’ll be getting into a bit later). Installing collections with ansible-galaxy ¶. The only prerequisite for installing NumPy is Python itself. It had a type field. This is designed to supplement the documentation with examples and explanation, not replace it. The collections module provides alternatives to built-in container data types such as list, tuple and dict. Python - Collections Module. Elements are returned in arbitrary order. enum.Enum (Python 3.4+)¶ Another useful collection is the enum object. Let’s consider the Animal namedtuple from the last example. Much of what you need to do with Python can be done using built-in containers like dict, list, set, and tuple. If you’re using Windows, you’ll be able to install a Python package by opening the Windows Command Prompt, and then typing this command: pip install package name Note: the above method would only work if you already added Python to Windows path. Just click on this link, to find a list of these modules . So, It doesn't need to be installed. Counter package defines the "counter.Counter" class similar to bags or multisets in other languages. 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