Python Lists

Introduction to Python

Hugo Bowne-Anderson

Data Scientist at DataCamp

Python Data Types

  • float - real numbers

  • int - integer numbers

  • str - string, text

  • bool - True, False

height = 1.73
tall = True
  • Each variable represents single value
Introduction to Python

Problem

  • Data Science: many data points

  • Height of entire family

height1 = 1.73
height2 = 1.68
height3 = 1.71
height4 = 1.89
  • Inconvenient
Introduction to Python

Python List

  • [a, b, c]
[1.73, 1.68, 1.71, 1.89]

[1.73, 1.68, 1.71, 1.89]

fam = [1.73, 1.68, 1.71, 1.89]
fam

[1.73, 1.68, 1.71, 1.89]

  • Name a collection of values

  • Contain any type

  • Contain different types

Introduction to Python

Python List

  • [a, b, c]
fam = ["liz", 1.73, "emma", 1.68, "mom", 1.71, "dad", 1.89]

fam

['liz', 1.73, 'emma', 1.68, 'mom', 1.71, 'dad', 1.89]

fam2 = [["liz", 1.73],
        ["emma", 1.68],
        ["mom", 1.71],
        ["dad", 1.89]]

fam2

[['liz', 1.73], ['emma', 1.68], ['mom', 1.71], ['dad', 1.89]]
Introduction to Python

List type

type(fam)

list

type(fam2)

list

  • Specific functionality

  • Specific behavior

Introduction to Python

Let's practice!

Introduction to Python

Preparing Video For Download...