generator expressions python

Magnificent Mole answered on July 8, 2020 Popularity 7/10 Helpfulness 3/10

answer generator expressions python

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generator expressions python

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>>> listcomp = ['Hello' for i in range(3)]
>>> genexpr = ('Hello' for i in range(3))

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Tags: python

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Contributed on Jul 08 2020

Magnificent Mole

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generator expressions python

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>>> even_squares = (x * x for x in range(10)
                    if x % 2 == 0)

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Contributed on Jul 08 2020

Magnificent Mole

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generator expression python

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#Generator expressions

#List comprehension is greedy evaluation, create lists immediately when execute it
#Generator expressions is lazy evaluation, creates an iterable generator object on demand
#Generator uses () instead of []
#Syntax order changes slightly compared to list comprehension

numbers = [1, 2, 3, 4, 5, 6, 7, 8]
for val in (x**2 for x in numbers if x%2 != 0):     # note the () instead of []
    print(val, end = " ")
#1 9 25 49

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Contributed on Aug 09 2022

Grotesque Gibbon

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generator expressions python

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>>> genexpr = ('Hello' for i in range(3))
>>> list(genexpr)
['Hello', 'Hello', 'Hello']

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Contributed on Jul 08 2020

Magnificent Mole

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generator expressions python

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>>> iterator = ('Hello' for i in range(3))
>>> for x in iterator:
...     print(x)
'Hello'
'Hello'
'Hello'

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Contributed on Jul 08 2020

Magnificent Mole

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generator expressions python

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def generator():
    for item in collection:
        yield expression

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Contributed on Jul 08 2020

Magnificent Mole

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generator expressions python

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>>> for x in even_squares:
...     print(x)
0
4
16
36
64

Popularity 7/10 Helpfulness 1/10 Language python

Source: dbader.org

Tags: python

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Contributed on Jul 08 2020

Magnificent Mole

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generator expressions python

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