The World of Two

Hoppy reaches a strange clearing. Everything here is black or white, light or dark. There are no shades of gray.

This is the land of Booleans. Here, everything is either True or False.

The Boolean Spell

is_light_on = True
is_door_open = False
print(is_light_on)
print(is_door_open)

Notice that True and False start with capital letters. They are special keywords in Python, not just words in quotes.

Define Reality

Create a variable named hoppy_is_happy and set it to True.

Check the Path

Create a variable named path_is_blocked and set it to False.

Reveal the Truth

Print both variables to see their values.

Capitalization

Python is case-sensitive! true (lowercase) will cause an error. It must be True.

Suggested Solution

Click to expand

Here is how you define the truth:

hoppy_is_happy = True
path_is_blocked = False
print(hoppy_is_happy)
print(path_is_blocked)

Advanced Tips

Want more? Click to expand

You can turn other things into Booleans using the bool() function.

print(bool(1))    # True
print(bool(0))    # False
print(bool("Hi")) # True
print(bool(""))   # False

Generally, "something" is True, and "nothing" (like 0 or empty text) is False.