15 - Dictionaries I - the basics.ipynb

Kernel: Python 3 (system-wide)

Exercise 15.1

Create a dictionary called mushrooms containing the data in the following table. Print it.

Scientific Name	Common Name
Fistulina hepatica	Beefsteak
Laetiporus sulphureus	Chicken-of-the-Woods
Flammulina velutipes	Enoki
Hericium erinaceus	Lion’s Mane

mushrooms = {'Fistulina hepatica': 'Beefsteak',
'Laetiporus sulphureus': 'Chicken-of-the-Woods',
'Flammulina velutipes': 'Enoki',
'Hericium erinaceus': 'Lion’s Mane'}

print(mushrooms)

Exercise 15.2

Add the following to mushrooms:
Pleurotus pulmonarius: Summer oyster
Pleurotus euosmos: Tarragon

mushrooms['Pleurotus pulmonarius'] = 'Summer oyster'
mushrooms['Pleurotus euosmos'] = 'Tarragon'

print(mushrooms)

Exercise 15.3

Print the common name for Laetiporus sulphureus.

print( mushrooms['Laetiporus sulphureus'] )

Exercise 15.4

Replace the common name for Laetiporus sulphureus with Sulphur Shelf (this is another common name for this species which forms striking golden-yellow shelf-like fungal structures on tree trunks and branches.)

mushrooms['Laetiporus sulphureus'] = 'Sulphur Shelf'
print( mushrooms )

Exercise 15.5

Test if the species Pholiota nameko is in mushrooms.

if 'Pholiota nameko' in mushrooms:
    print ( 'Pholiota nameko is in mushrooms' )
else:
    print ( 'Pholiota nameko is not in mushrooms' )

Exercise 15.6

Create an empty dictionary called books.

books = {}

print( books )

Exercise 15.7

Add the following two books to your dictionary books:

Book title	Authour
The chimpanzees of Gombe	Jane Goodall
The blind watchmaker	Richard Dawkins

books['The chimpanzees of Gombe'] = 'Jane Goodall'
books['The blind watchmaker'] = 'Richard Dawkins'

print(books)