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python named tuples

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just-saved-you-a-stackoverflow-visit answered on June 14, 2022 Popularity 9/10 Helpfulness 3/10

answer python named tuples

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python named tuples

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from collections import namedtuple
A = namedtuple('A', 'a b c')
a = A(1,2,3)
a.b == a[1] # == 2
a == A(1,2,3) # is True
a[2] = 5 # TypeError: 'A' object does not support item assignment
len(a) # == 3
type(a) # <class '__main__.A'>

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Source: Grepper

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Contributed on Jun 14 2022

just-saved-you-a-stackoverflow-visit

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python named tuple

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import collections

# create a named tuple called Person with fields of first_name, last_name, and age
Person = collections.namedtuple('Person', ('first_name', 'last_name', 'age'))

# Note a named tuple can have fields names as string using a space as a delimiter also see example below
Person = collections.namedtuple('Person', 'first_name last_name age')

# initialize a user as a Person Tuple
user = Person(first_name="John", last_name="Doe", age=21)

# print user named tuple
print(user)

# print user by field names
print(user.first_name, user.last_name, user.age)

# print length of user
print(len(user))

# print first name by index
print(user[0])

# loop through user
for item in user:
   print(item)

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Source: codefreelance.net

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Contributed on Aug 23 2022

Jerome Scott

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Basic example of a Named Tuple

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>>> # Basic example
>>> Point = namedtuple('Point', ['x', 'y'])
>>> p = Point(11, y=22)     # instantiate with positional or keyword arguments
>>> p[0] + p[1]             # indexable like the plain tuple (11, 22)
33
>>> x, y = p                # unpack like a regular tuple
>>> x, y
(11, 22)
>>> p.x + p.y               # fields also accessible by name
33
>>> p                       # readable __repr__ with a name=value style
Point(x=11, y=22)

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Source: docs.python.org

Tags: basic basi

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Contributed on Jul 29 2022

PythonPower

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python named tuples

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