namedtuple

Data Types in Python

Jason Myers

Instructor

What is a namedtuple?

A tuple where each position (column) has a name
Ensure each one has the same properties
Alternative to a pandas DataFrame row

Creating a namedtuple

Pass a name and a list of fields

from collections import namedtuple

Eatery = namedtuple('Eatery', ['name', 'location', 'park_id',
   ...: 'type_name'])

eateries = []

for eatery in nyc_eateries:
    details = Eatery(eatery['name'],
                     eatery['location'],
                     eatery['park_id'],
                     eatery['type_name'])
    eateries.append(details)

Print the first element

print(eateries[0])

Eatery(name='Mapes Avenue Ballfields Mobile Food Truck',
location='Prospect Avenue, E. 181st Street',
park_id='X289', type_name='Mobile Food Truck')

Leveraging namedtuples

Each field is available as an attribute of the namedtuple

for eatery in eateries[:3]:
    print(eatery.name)
    print(eatery.park_id)
    print(eatery.location)

Mapes Avenue Ballfields Mobile Food Truck
X289
Prospect Avenue, E. 181st Street

Claremont Park Mobile Food Truck
X008
East 172 Street between Teller & Morris avenues ...

Let's practice!

Data Types in Python