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  3. Data Types in Python
  • 1

    Fundamental Sequence Data Types

    Free

    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

Exercise

Printing floats

Scientific notation is a powerful tool for representing numbers, but it can be confusing to handle when trying to print float values. However, we can use the f strings we learned about previously to make sure we get them printed properly every time by using a format specifier. For example, if we wanted to format a variable in an f string as a float, we can use the f format specifier, such as: print(f"{some_variable:f}"). It also takes an operation precision on the float format specifier, for example, print(f"{some_variable:.4f}") would print four decimal places of precision.

Instructions

100 XP
  • Print float1, float2, and float3 notice where the jump to scientific notation occurs.
  • Print float2 and float3 using the default float format specifier, and notice what happened to float3.
  • Print float3 with the float format specifier and a precision of 7.