Python 201: Learn intermediate Python3

Improve your Python 3 skills from beginner to intermediate by exploring operators, managing files, nested functions, decorators, advanced argument handling, virtual environments, third party packages, and API requests.

Discover how the in operator in Python, an intermediate concept, checks membership across lists, dictionaries, tuples, and sets, with rock, paper, scissors examples and practical, hands-on exploration.

Learn how the not operator in Python 3 inverts boolean values and conditions, including not in with lists, plus guidelines on readability and practical examples.

Learn how to read files in Python using a context manager to safely open, read, and print contents, ensuring memory efficiency and automatic file closing.

Learn how to open, read, and write files in Python, create new files, and use a context manager with write and append modes, including new line and tab characters.

Learn to read multiple lines from a file in Python, convert them into a list, and filter emails with the in operator and strip to remove newlines.

Create and write dynamic files from user input, using a context manager to save, read, and optionally open the file. The lesson also covers nested structures and functions inside functions.

Explore functions nested inside other functions in Python, and learn how scope allows inner definitions to access outer variables, while reviewing execution, arguments, and the idea of decorators.

Learn to make a simple api request using the requests package, check a 200 status, and build an uptime monitor with a loop and timed pauses.

Make a JSON API request with requests, fetch data from a star wars themed API's people endpoint, parse JSON into a Python dictionary, and access name, birth year, and films.

Learn to read and edit JSON in Python by converting a JSON string to a dictionary with json.loads, modifying fields, and converting back with json.dumps for output.

Explore Python function arguments and learn how *args collects unlimited positional arguments into a tuple, with Django examples, enabling you to add or print numbers.

Learn Python function kwargs by using *args and **kwargs to handle positional, optional, and keyword arguments, illustrated with a pizza order and price calculations.

Learn how to install and verify pip, Python’s package manager, use pip install to add packages like requests, and recognize when Python ships with pip.

Explore the difference between mutable and immutable in Python, showing that strings are immutable while lists are mutable and can be appended, with behind-the-scenes memory behavior.

Learn how to use Python's enumerate to obtain index values from a list, unpack them, and print a numbered or filtered list using for loops and f-strings.

Explore list comprehensions as a pythonic, one-line replacement for for loops to build a list and square numbers, with a future look at dictionary comprehensions.

Learn to build dictionaries with dictionary comprehensions by unpacking tuples, mapping keys to values, and using curly braces or dict() casting, plus a quick compare to the long form.

Learn how to retrieve dictionary values by key using get, handle missing keys with defaults or None, and conditionally act on results with if statements, illustrated by a courses dictionary.

Learn how to use Python virtual environments to isolate packages, manage multiple Django versions with pip, create and activate environments on Mac, Linux, and Windows, then deactivate when done.

Learn Python interactively by exploring built-in methods on strings, lists, tuples, and dictionaries, using dot-notation, split, and join to experiment in shells.

Install and manage Python packages with pip, set up a virtual environment, and import and initialize Kalorama to produce colored terminal output per the documentation.

Review how to perform API requests with the requests package, fetch JSON data, convert to a Python dictionary, and iterate over related resources using the pokey api.

Build a Pokemon character app that fetches data from an api using user input, converts json to a dictionary, and displays abilities, moves, and other stats.