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""" Example adapted from ``yield_delegate_fail.py``

The following program performs a simple abstraction over the process of

yielding.

"""

# tag::YIELD_DELEGATE_FIX[]

def f():

def do_yield(n):

yield n

x = 0

while True:

x += 1

yield from do_yield(x)

# end::YIELD_DELEGATE_FIX[]

if __name__ == '__main__':

print('Invoking f() now produces a generator')

g = f()

print(next(g))

print(next(g))

print(next(g))