Idiom for long tuple unpacking [closed]

Answer 1

To answer "is there anything better", I would suggest that a namedtuple allows you to access the individual data items with minimal fuss:

>>> from collections import namedtuple
>>> Person = namedtuple("Person", ['person_id', 'first_name', 'last_name', 
                                   'email', 'birth_date', 'graduation_year', 
                                   'home_street', 'home_city', 'home_zip', 
                                   'mail_street', 'mail_city', 'mail_zip'])
>>> row = range(12) # dummy data
>>> p = Person(*row) # unpack tuple into namedtuple
>>> p
Person(person_id=0, first_name=1, last_name=2, email=3, birth_date=4, graduation_year=5, home_street=6, home_city=7, home_zip=8, mail_street=9, mail_city=10, mail_zip=11)
>>> p.birth_date
4

This means you access attributes, rather than separate names, but is lighter-weight than building a class, keeps all of the data from your query together and exposes the values through sensible names.

Answer 2

Anwering your question "Which of the three options is the best?"

pep8 states:

The preferred way of wrapping long lines is by using Python's implied line continuation inside parentheses, brackets and braces. Long lines can be broken over multiple lines by wrapping expressions in parentheses. These should be used in preference to using a backslash for line continuation.

This Means the second one is preferred over the first one. The third one is fine conforming pep8 as well, though personally wouldn't recommend it.