Generators in Python

 

Concept

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Generators are used to create iterators, but with a different approach. Generators are simple functions that return an iterable set of items, one at a time, in a special way.

When an iteration over a set of items starts using the for a statement, the generator is run. Once the generator's function code reaches a "yield" statement, the generator yields its execution back to the for loop, returning a new value from the set. The generator function can generate as many values (possibly infinite) as it wants, yielding each one in its turn.

Code

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def gen_fun():

yield 1
        yield 2
        yield 3
        yield 4
        yield 5

        

for i in gen_fun():

print(i)

>>> 

1
2
3
4
5

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