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  3. Data Types in Python
  • 1

    Fundamental Sequence Data Types

    Gratuito

    This chapter will introduce you to the fundamental Python data types - lists, sets, and strings. These data containers are critical as they provide the basis for storing and looping over ordered data. To make things interesting, you'll apply what you learn about these types to answer questions about the New York Baby Names dataset!

  • 2

    Dictionaries - The Root of Python

    At the root of all things Python is a dictionary. Herein, you'll learn how to use them to safely handle data that can viewed in a variety of ways to answer even more questions about the New York Baby Names dataset. You'll explore how to loop through data in a dictionary, access nested data, add new data, and come to appreciate all of the wonderful capabilities of Python dictionaries.

  • 3

    Numeric Data Types, Booleans, and Sets

    Let's take a step away from dictionaries and look at some other common numeric and boolean data types along with sets.

  • 4

    Advanced Data Types

    Some data types are composites of other data types and give me even more capabilities than a fundamental data type. Let's explore a few complex types from the collections module and data classes.

Initializing

Exercicio

Safely finding by key

As demonstrated in the video, if you attempt to access a key that isn't present in a dictionary, you'll get a KeyError. One option to handle this type of error is to use a try: except: block. You can learn more about error handling in Python Data Science Toolbox (Part 1).

Python provides a faster, more versatile tool to help with this problem in the form of the .get() method. The .get() method allows you to supply the name of a key, and optionally, what you'd like to have returned if the key is not found.

You'll be using same squirrels_by_park dictionary, which is keyed by the park name and the value is a tuple with the main color, highlights, action, and reaction to humans, and will gain practice using the .get() method.

Instruções

100 XP
  • Safely print 'Union Square Park' from the squirrels_by_park dictionary .
  • Safely print the type of 'Fort Tryon Park' from the squirrels_by_park dictionary.
  • Safely print 'Central Park' from the squirrels_by_park dictionary or 'Not Found'.