Learn the basics of Python with these beginner-friendly tutorials
There are many common file types that you will need to work with as a software developer. One such format is the CSV file. CSV stands for “Comma-Separated Values” and is a text file format that uses a comma as a delimiter to separate values from one another. Each row is its own record and […]
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Python provides a couple of really nice modules that you can use to craft emails with. They are the email and smtplib modules. Instead of going over various methods in these two modules, you’ll spend some time learning how to actually use these modules. Specifically, you’ll be covering the following: The basics of emailing How
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The Jupyter Notebook is an open-source web application that allows you to create and share documents that contain code, equations, visualizations, and formatted text. By default, Jupyter Notebook runs Python out of the box. Additionally, Jupyter Notebook supports many other programming languages via extensions. You can use the Jupyter Notebook for data cleaning and transformation,
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As a developer, there are times where you may end up with two or more dictionaries that you need to combine into one master dictionary. There are lots of different ways to merge dictionaries in the Python programming language. In this tutorial, you will look at a few of the old ways to merge dictionaries
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Python came out with a special new keyword several years ago in Python 2.5 that is known as the with statement. This new keyword allows a developer to create context managers. But wait! What’s a context manager? They are handy constructs that allow you to set something up and tear something down automatically. For example,
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In this video tutorial, you will learn about the following: Create dictionaries Access dictionaries Dictionary methods Modifying dictionaries Deleting from your dictionary If you prefer to read your tutorials, then you can check out this one: Python 101 – Learning About Dictionaries
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A set data type is defined as an “unordered collection of distinct hashable objects” according to the Python 3 documentation. You can use a set for membership testing, removing duplicates from a sequence and computing mathematical operations, like intersection, union, difference, and symmetric difference. Due to the fact that they are unordered collections, a set
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Type checking or hinting is a newer feature of Python that was added in Python 3.5. Type hinting is also known as type annotation. Type hinting is adding special syntax to functions and variable declarations that tell the developer what type the argument or variable is. Python does not enforce the type hints. You can
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Dictionaries are another fundamental data type in Python. A dictionary is a key, value pair. Some programming languages refer to them as hash tables. They are described as a mapping object that maps hashable values to arbitrary objects. A dictionary’s keys must be immutable, that is, unable to change. Starting in Python 3.7, dictionaries are
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Tuples are another sequence type in Python. Tuples consist of a number of values that are separated by commas. A tuple is immutable whereas a list is not. Immutable means that the tuple has a fixed value and cannot change. You cannot add, delete or modify items in a tuple. Immutable objects are useful when
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Lists are a fundamental data type in the Python programming language. A list is a mutable sequence that is typically a collection of homogeneous items. Mutable means that you can change a list after its creation. You will frequently see lists that contain other lists. These are known as nested lists. You will also see
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People who are new to the Python programming language can get a bit confused about the difference between “==” (equality) and Python’s keyword “is” (identity). I have even seen experienced programmers who will find the difference subtle enough that they will introduce logic errors in their code do to a misunderstanding between the two. In
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Whether you’re new to Python, been using it for a few years or you’re an expert, knowing how to use Python’s introspection capabilities can help your understanding of your code and that new package you just downloaded with the crappy documentation. Introspection is a fancy word that means to observe oneself and ponder one’s thoughts,
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