Wrap-up

Data Types in Python

Jason Myers

Instructor

Sequence data types

  • Lists

['Chocolate Chip', 'Peanut Butter']

  • Tuples

('Sugar', 'Eggs')

  • Strings

'Cookies are wonderful'

Data Types in Python

Dictionaries

  • Safely adding and removing

squirrels_by_park.pop("City Hall Park", {})

  • Unpacking items

for field, value in squirrels_by_park.items():

  • Handling nested data
for park in squirrels_by_park:
    print(squirrels_by_park[park].get('color', 'N/A'))
Data Types in Python

Numeric and logical types

  • Integers int(1)
  • Floats float(1.333333334)
  • Decimals Decimal(5.50)
  • Booleans True or False
  • Sets {'Anzac', 'Oatmeal Raisin'}
Data Types in Python

Complex data types

  • Counters

    Counter(nyc_eatery_types)

  • Defaultdicts

    eateries_by_park = defaultdict(list)
for park_id, name in nyc_eateries_parks:
  eateries_by_park[park_id].append(name)

  • Namedtuples

    namedtuple('Worm', ['species', 'sex', 'mass'])
Data Types in Python

Complex data types

  • Dataclasses
@dataclass
class WeightEntry:
    species: str
    flipper_length: int
    body_mass: int
    sex: str
Data Types in Python

Congratulations!

Data Types in Python

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