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Introduction to Python Sandbox

👋 Welcome to your new workspace! You can use this interactive notebook to take notes, explore the course data, and practice your Python skills. There is also a cheat sheet at the bottom to use as a reference for later!

A sample of the data from Introduction to Python has been defined as lists in the cell below.

Click inside the cell and press "Run" to execute the pre-written code or adapt it and write your own!

# Import numpy
import numpy as np

# Assign the names to a list
names = np.array(['Kiko Calero', 'Armando Benitez', 'Delmon Young', 'Greg Maddux', 'J.D. Drew', 'James Loney', 'Jeff Ridgway', 'Ronny Cedeno', 'Omar Infante', 'Wandy Rodriguez'])

# Assign the positions to a list
positions = np.array(['Pitcher', 'Pitcher', 'Outfielder', 'Pitcher', 'Outfielder', 'Infielder', 'Pitcher', 'Infielder', 'Infielder', 'Pitcher'])

# Assign the heights to a list
heights = np.array([73, 76, 75, 72, 73, 75, 75, 72, 72, 71])

# Print the mean height of the players
print(np.mean(heights))
# Add your own code here!
import numpy as np
names = np.array(['Omar Infante', 'Greg Maddux', 'James Loney'])

heights = np.array([73, 77, 76, 75, 75, 72, 72, 71, 70])
print(np.average(heights))
print(np.max(heights))
print(np.mean(heights))

You can click "Add markdown" to add and edit text cells for notes, and "Add Code" to continue practicing your Python code.

Alternatively, you can create a blank Python workspace and code in a fresh notebook!

Introduction to Python Interactive Cheat Sheet

Below are some interactive examples of things you learned from the course. Bookmark this page as a reference and a place to experiment with queries!

Math and variables

You can use Python as a calculator, performing things like addition, subtraction, multiplication, and division.

# Addition
print(5 + 5)

# Subtraction
print(10 - 5)

# Multiplication
print(5 * 10)

# Division
print(10 / 5)

You can assign values to variables using the = sign.

# Assign a value to x
x = 5

# Print x
print(x)

You can use the type() function to determine the type of a variable.

# Assign a variable to x
x = "testing"

# Print the type of x
print(type(x))

To convert the type of a variable, you can use functions such as:

  • str() to convert to a string.
  • int() to convert to an integer.
  • float() to convert to a float.
# Assign a string variable to y
y = "1"

# Print y as an integer
print(int(y))

# Print y as a float
print(float(y))

Lists

You can create a list using square brackets [], using commas to separate the values.

# Create a list
my_list = ["Learning", "Python", "is", "fun!"]

# Print the list
print(my_list)

You can slice different parts of a list by using square brackets and numerical indices.

If you want to slice multiple values, you can use : to specify the start and stop (not included) of your slice.

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